/**
 * Tekinstaat Ana Stil Dosyasi
 *
 * NOT: Bu dosya artik sadece global degiskenleri icerir.
 * Diger stiller assets/css/ altinda moduler olarak ayrilmistir.
 *
 * @package Tekinstaat
 * @since 1.0.0
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Renkler */
    --color-primary: #18b1c2;
    /* Turkuaz */
    /* Fallback */
    --color-primary-dark: #12818f;
    --color-secondary: #f58220;
    /* Turuncu */
    /* Fallback */
    --color-secondary-dark: #cc6d1b;
    --color-success: #38a169;
    --color-warning: #d69e2e;
    --color-error: #e53e3e;

    /* Nötr Renkler */
    --color-white: #ffffff;
    --color-gray-50: #f7fafc;
    --color-gray-100: #edf2f7;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e0;
    --color-gray-400: #a0aec0;
    --color-gray-500: #718096;
    --color-gray-600: #4a5568;
    --color-gray-700: #2d3748;
    --color-gray-800: #1a202c;
    --color-gray-900: #171923;
    --color-black: #000000;

    /* Tipografi */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    /* Font Boyutlari */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1rem;
}


/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Renkler */
    --color-primary: #18b1c2;
    --color-primary-dark: #12818f;
    --color-secondary: #f58220;
    --color-secondary-dark: #cc6d1b;
    --color-success: #38a169;
    --color-warning: #d69e2e;
    --color-error: #e53e3e;

    /* Header & Footer Fallbacks */
    --header-bg: #ffffff;
    --header-color: #2d3748;
    --footer-bg: #0f172a;
    /* Corporate Dark Navy */
    --footer-color: #9ca3af;

    /* Nötr Renkler */
    --color-white: #ffffff;
    --color-gray-50: #f7fafc;
    --color-gray-100: #edf2f7;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e0;
    --color-gray-400: #a0aec0;
    --color-gray-500: #718096;
    --color-gray-600: #4a5568;
    --color-gray-700: #2d3748;
    --color-gray-800: #1a202c;
    --color-gray-900: #171923;
    --color-black: #000000;

    /* Tipografi */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    /* Font Boyutlari */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1rem;
}

/* ========================================
   1. Reset & Base (Updated with Preloader)
   ======================================== */

#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-white);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.preloader-logo img {
    max-height: 80px;
    width: auto;
    animation: pulse 2s infinite;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-gray-200);
    border-top: 4px solid var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========================================
   1. Reset & Base
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
}

button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
}

ul,
ol {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-800);
}

h1 {
    font-size: var(--text-4xl);
}

h2 {
    font-size: var(--text-3xl);
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

/* ========================================
   2. Layout
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.site-main {
    min-height: calc(100vh - 200px);
}

/* ========================================
   3. Header
   ======================================== */
.site-header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
    gap: var(--spacing-4);
}

.site-branding .site-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.site-branding img {
    max-height: 50px;
    width: auto;
}

/* Navigation */
.main-navigation .primary-menu {
    display: flex;
    gap: var(--spacing-6);
}

.main-navigation a {
    font-weight: 500;
    color: var(--color-gray-700);
    padding: var(--spacing-2) 0;
    position: relative;
}

.main-navigation a:hover,
.main-navigation .current-menu-item a {
    color: var(--color-primary);
}

.main-navigation a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-normal);
}

.main-navigation a:hover::after,
.main-navigation .current-menu-item a::after {
    width: 100%;
}

/* Menu Toggle (Mobile) */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-2);
}

.hamburger-icon,
.hamburger-icon::before,
.hamburger-icon::after {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    transition: var(--transition-normal);
}

.hamburger-icon {
    position: relative;
}

.hamburger-icon::before,
.hamburger-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.hamburger-icon::before {
    top: -7px;
}

.hamburger-icon::after {
    top: 7px;
}

/* Header Contact */
.header-contact .header-phone {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.header-contact .header-phone:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

/* Top Bar */
/* Top Bar */
.top-bar {
    background-color: var(--topbar-bg, var(--color-primary-dark));
    color: var(--topbar-color, var(--color-gray-300));
    padding: var(--spacing-2) 0;
    font-size: var(--text-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    display: flex;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

.top-bar-item:hover {
    color: var(--color-white);
}

.top-bar-item i {
    color: var(--color-secondary);
}

.top-bar-right {
    display: flex;
    align-items: center;
}

.social-icons {
    display: flex;
    gap: var(--spacing-3);
}

.social-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-white);
    transition: all var(--transition-fast);
    font-size: 0.8em;
}

.social-item:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* ========================================
   4. Hero Section
   ======================================== */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-20) 0;
    text-align: center;
}

.hero-title {
    font-size: var(--text-5xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-4);
}

.hero-description {
    font-size: var(--text-xl);
    color: var(--color-gray-200);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-button {
    display: inline-block;
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-4) var(--spacing-8);
    border-radius: var(--radius-md);
    font-size: var(--text-lg);
    font-weight: 600;
    transition: background-color var(--transition-fast);
}

.hero-button:hover {
    background-color: var(--color-secondary-dark);
    color: var(--color-white);
}

/* ========================================
   5. Section Styles
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-10);
}

.section-title {
    font-size: var(--text-3xl);
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-3);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
}

.section-footer {
    text-align: center;
    margin-top: var(--spacing-10);
}

.view-all-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-lg);
}

.view-all-button:hover {
    color: var(--color-secondary);
}

/* Featured Projects Section */
.featured-projects-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-gray-50);
}

/* About Summary Section */
.about-summary-section {
    padding: var(--spacing-16) 0;
    text-align: center;
}

.about-text {
    max-width: 800px;
    margin: 0 auto var(--spacing-6);
    font-size: var(--text-lg);
    color: var(--color-gray-600);
}

.about-link {
    font-weight: 600;
    color: var(--color-primary);
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
}

.cta-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-3);
}

.cta-description {
    color: var(--color-gray-200);
    margin-bottom: var(--spacing-8);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.cta-button-primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.cta-button-primary:hover {
    background-color: var(--color-secondary-dark);
    color: var(--color-white);
}

.cta-button-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.cta-button-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

/* ========================================
   6. Components
   ======================================== */

/* --- Project Card --- */
.proje-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.proje-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.proje-card-link {
    display: block;
    color: inherit;
}

.proje-card-image {
    position: relative;
    aspect-ratio: 3/2;
    overflow: hidden;
}

.proje-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.proje-card:hover .proje-card-image img {
    transform: scale(1.05);
}

.proje-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-gray-200);
    color: var(--color-gray-500);
}

.proje-card-status {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.status-ongoing {
    background-color: var(--color-warning);
    color: var(--color-white);
}

.status-completed {
    background-color: var(--color-success);
    color: var(--color-white);
}

.status-selling {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.status-delivered {
    background-color: var(--color-gray-600);
    color: var(--color-white);
}

.proje-card-content {
    padding: var(--spacing-5);
}

.proje-card-title {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-2);
    color: var(--color-gray-800);
}

.proje-card-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-gray-500);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-3);
}

.proje-card-excerpt {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-4);
}

.proje-card-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-sm);
}

/* --- Homepage Project Grid --- */
.project-grid-parent {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(6, 1fr);
    gap: 8px;
    margin-bottom: 2rem;
    min-height: 500px;
}

.project-grid-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.project-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-grid-item:hover img {
    transform: scale(1.05);
}

.project-grid-item .grid-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 20px;
    color: #fff;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-grid-item:hover .grid-overlay {
    opacity: 1;
}

.project-grid-item .grid-title {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

/* Grid Yerlesimi */
.div1 {
    grid-column: span 5 / span 5;
    grid-row: span 6 / span 6;
}

.div2 {
    grid-column: span 2 / span 2;
    grid-row: span 3 / span 3;
    grid-column-start: 6;
}

.div3 {
    grid-column: span 2 / span 2;
    grid-row: span 3 / span 3;
    grid-column-start: 6;
    grid-row-start: 4;
}

/* ========================================
   7. Footer
   ======================================== */
.site-footer {
    background-color: var(--color-gray-800);
    color: var(--color-gray-300);
    padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer-inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-brand .footer-site-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-white);
}

.footer-description {
    margin-top: var(--spacing-2);
    color: var(--color-gray-400);
}

.site-footer h3 {
    color: var(--color-white);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-4);
}

.footer-contact p {
    margin-bottom: var(--spacing-2);
}

.footer-contact a {
    color: var(--color-gray-300);
}

.footer-contact a:hover {
    color: var(--color-secondary);
}

.footer-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-menu a {
    color: var(--color-gray-300);
}

.footer-menu a:hover {
    color: var(--color-secondary);
}

.footer-whatsapp .whatsapp-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    background-color: #25D366;
    color: var(--color-white);
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.footer-whatsapp .whatsapp-button:hover {
    background-color: #1da851;
    color: var(--color-white);
}

.footer-social {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.footer-social-item {
    background-color: var(--color-gray-700);
    color: var(--color-gray-300);
}

.footer-social-item:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--spacing-6);
    text-align: center;
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

/* ========================================
   8. Utility Classes
   ======================================== */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-4 {
    margin-bottom: var(--spacing-4);
}

.mb-8 {
    margin-bottom: var(--spacing-8);
}

.mt-0 {
    margin-top: 0;
}

.mt-4 {
    margin-top: var(--spacing-4);
}

.mt-8 {
    margin-top: var(--spacing-8);
}

/* ========================================
   9. Mobile Responsive
   ======================================== */
@media (max-width: 768px) {

    /* Header & Nav */
    .top-bar-inner {
        flex-direction: column;
        gap: var(--spacing-2);
    }

    .top-bar-left {
        justify-content: center;
        width: 100%;
        gap: var(--spacing-4);
    }

    .top-bar-right {
        width: 100%;
        justify-content: center;
    }

    /* Hero */
    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-description {
        font-size: var(--text-base);
    }

    /* Projects Grid */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-grid-parent {
        display: flex;
        flex-direction: column;
        gap: 16px;
        min-height: auto;
    }

    .div1,
    .div2,
    .div3 {
        grid-column: auto;
        grid-row: auto;
        width: 100%;
        height: 300px;
        /* Mobilde sabit yukseklik */
    }

    .proje-title {
        font-size: var(--text-2xl);
    }

    /* Footer */
    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Renkler */
    --color-primary: #1a365d;
    --color-primary-dark: #0f2342;
    --color-secondary: #c9a227;
    --color-secondary-dark: #a8861f;
    --color-success: #38a169;
    --color-warning: #d69e2e;
    --color-error: #e53e3e;

    /* Nötr Renkler */
    --color-white: #ffffff;
    --color-gray-50: #f7fafc;
    --color-gray-100: #edf2f7;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e0;
    --color-gray-400: #a0aec0;
    --color-gray-500: #718096;
    --color-gray-600: #4a5568;
    --color-gray-700: #2d3748;
    --color-gray-800: #1a202c;
    --color-gray-900: #171923;
    --color-black: #000000;

    /* Tipografi */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    /* Font Boyutlari */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1rem;
}

/* ========================================
   Reset & Base
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
}

button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
}

ul,
ol {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-800);
}

h1 {
    font-size: var(--text-4xl);
}

h2 {
    font-size: var(--text-3xl);
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

/* ========================================
   Layout
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.site-main {
    min-height: calc(100vh - 200px);
}

/* ========================================
   Header
   ======================================== */
.site-header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
    gap: var(--spacing-4);
}

.site-branding .site-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.site-branding img {
    max-height: 50px;
    width: auto;
}

/* Navigation */
.main-navigation .primary-menu {
    display: flex;
    gap: var(--spacing-6);
}

.main-navigation a {
    font-weight: 500;
    color: var(--color-gray-700);
    padding: var(--spacing-2) 0;
    position: relative;
}

.main-navigation a:hover,
.main-navigation .current-menu-item a {
    color: var(--color-primary);
}

.main-navigation a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-normal);
}

.main-navigation a:hover::after,
.main-navigation .current-menu-item a::after {
    width: 100%;
}

/* Menu Toggle (Mobile) */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-2);
}

.hamburger-icon,
.hamburger-icon::before,
.hamburger-icon::after {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    transition: var(--transition-normal);
}

.hamburger-icon {
    position: relative;
}

.hamburger-icon::before,
.hamburger-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.hamburger-icon::before {
    top: -7px;
}

.hamburger-icon::after {
    top: 7px;
}

/* Header Contact */
.header-contact .header-phone {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.header-contact .header-phone:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background-color: var(--color-gray-800);
    color: var(--color-gray-300);
    padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer-inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-brand .footer-site-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-white);
}

.footer-description {
    margin-top: var(--spacing-2);
    color: var(--color-gray-400);
}

.site-footer h3 {
    color: var(--color-white);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-4);
}

.footer-contact p {
    margin-bottom: var(--spacing-2);
}

.footer-contact a {
    color: var(--color-gray-300);
}

.footer-contact a:hover {
    color: var(--color-secondary);
}

.footer-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-menu a {
    color: var(--color-gray-300);
}

.footer-menu a:hover {
    color: var(--color-secondary);
}

.footer-whatsapp .whatsapp-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    background-color: #25D366;
    color: var(--color-white);
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.footer-whatsapp .whatsapp-button:hover {
    background-color: #1da851;
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--spacing-6);
    text-align: center;
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-20) 0;
    text-align: center;
}

.hero-title {
    font-size: var(--text-5xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-4);
}

.hero-description {
    font-size: var(--text-xl);
    color: var(--color-gray-200);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-button {
    display: inline-block;
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-4) var(--spacing-8);
    border-radius: var(--radius-md);
    font-size: var(--text-lg);
    font-weight: 600;
    transition: background-color var(--transition-fast);
}

.hero-button:hover {
    background-color: var(--color-secondary-dark);
    color: var(--color-white);
}

/* ========================================
   Section Styles
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-10);
}

.section-title {
    font-size: var(--text-3xl);
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-3);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
}

.section-footer {
    text-align: center;
    margin-top: var(--spacing-10);
}

.view-all-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-lg);
}

.view-all-button:hover {
    color: var(--color-secondary);
}

/* Featured Projects Section */
.featured-projects-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-gray-50);
}

/* About Summary Section */
.about-summary-section {
    padding: var(--spacing-16) 0;
    text-align: center;
}

.about-text {
    max-width: 800px;
    margin: 0 auto var(--spacing-6);
    font-size: var(--text-lg);
    color: var(--color-gray-600);
}

.about-link {
    font-weight: 600;
    color: var(--color-primary);
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
}

.cta-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-3);
}

.cta-description {
    color: var(--color-gray-200);
    margin-bottom: var(--spacing-8);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.cta-button-primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.cta-button-primary:hover {
    background-color: var(--color-secondary-dark);
    color: var(--color-white);
}

.cta-button-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.cta-button-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

/* ========================================
   Projects Grid
   ======================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-6);
}

/* ========================================
   Project Card
   ======================================== */
.proje-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.proje-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.proje-card-link {
    display: block;
    color: inherit;
}

.proje-card-image {
    position: relative;
    aspect-ratio: 3/2;
    overflow: hidden;
}

.proje-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.proje-card:hover .proje-card-image img {
    transform: scale(1.05);
}

.proje-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-gray-200);
    color: var(--color-gray-500);
}

.proje-card-status {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.status-ongoing {
    background-color: var(--color-warning);
    color: var(--color-white);
}

.status-completed {
    background-color: var(--color-success);
    color: var(--color-white);
}

.status-selling {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.status-delivered {
    background-color: var(--color-gray-600);
    color: var(--color-white);
}

.proje-card-content {
    padding: var(--spacing-5);
}

.proje-card-title {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-2);
    color: var(--color-gray-800);
}

.proje-card-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-gray-500);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-3);
}

.proje-card-excerpt {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-4);
}

.proje-card-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-sm);
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
    background-color: var(--color-gray-100);
    padding: var(--spacing-12) 0;
    text-align: center;
}

.page-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-3);
}

.page-description {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
}

/* ========================================
   Projects Filter
   ======================================== */
.projects-filter {
    padding: var(--spacing-6) 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
}

.filter-wrapper {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.filter-group label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
}

.filter-select {
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    min-width: 180px;
    background-color: var(--color-white);
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ========================================
   Projects List
   ======================================== */
.projects-list {
    padding: var(--spacing-10) 0;
}

.no-projects {
    text-align: center;
    padding: var(--spacing-16) 0;
    color: var(--color-gray-500);
}

/* Pagination */
.pagination {
    margin-top: var(--spacing-10);
    display: flex;
    justify-content: center;
}

.pagination .nav-links {
    display: flex;
    gap: var(--spacing-2);
}

.pagination a,
.pagination span {
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
}

.pagination a:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.pagination .current {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* ========================================
   Single Project
   ======================================== */
.single-proje .proje-header {
    background-color: var(--color-gray-100);
    padding: var(--spacing-8) 0;
}

/* Breadcrumb */
.breadcrumb {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-4);
}

.breadcrumb a {
    color: var(--color-gray-500);
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb .separator {
    margin: 0 var(--spacing-2);
}

.breadcrumb .current {
    color: var(--color-gray-700);
}

.proje-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-4);
}

.proje-meta {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
    flex-wrap: wrap;
}

.proje-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-gray-600);
}

.proje-status {
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
}

/* Project Content Grid */
.proje-content-section {
    padding: var(--spacing-10) 0;
}

.proje-content-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-10);
}

.proje-main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-10);
}

.proje-description .content-text {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-gray-600);
}

.proje-description .content-text p {
    margin-bottom: var(--spacing-4);
}

/* Sidebar */
.proje-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

/* ========================================
   Teknik Bilgiler
   ======================================== */
.proje-teknik-bilgiler {
    background-color: var(--color-gray-50);
    padding: var(--spacing-8);
    border-radius: var(--radius-lg);
}

.teknik-bilgiler-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-6);
}

.teknik-bilgi-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.teknik-icon {
    width: 40px;
    height: 40px;
    background-color: var(--color-primary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.teknik-content {
    display: flex;
    flex-direction: column;
}

.teknik-label {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.teknik-value {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-gray-800);
}

/* ========================================
   Konum / Harita
   ======================================== */
.proje-konum {
    margin-top: var(--spacing-8);
}

.konum-adres {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-4);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.konum-adres address {
    font-style: normal;
    color: var(--color-gray-600);
}

.konum-harita {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.konum-harita iframe {
    width: 100%;
    height: 400px;
    border: none;
}

/* ========================================
   Proje Iletisim
   ======================================== */
.proje-iletisim {
    background-color: var(--color-gray-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-200);
}

.proje-iletisim .section-title {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-2);
}

.iletisim-aciklama {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-6);
}

.iletisim-butonlar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.iletisim-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    color: var(--color-white);
    transition: all var(--transition-fast);
}

.iletisim-btn-telefon {
    background-color: var(--color-primary);
}

.iletisim-btn-telefon:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.iletisim-btn-whatsapp {
    background-color: #25D366;
}

.iletisim-btn-whatsapp:hover {
    background-color: #1da851;
    color: var(--color-white);
}

.btn-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.btn-text {
    display: flex;
    flex-direction: column;
}

.btn-label {
    font-size: var(--text-sm);
    opacity: 0.9;
}

.btn-value {
    font-weight: 600;
}

/* ========================================
   Page Templates
   ======================================== */
/* Kurumsal */
.page-kurumsal .content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.page-kurumsal .featured-image {
    margin-bottom: var(--spacing-8);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.page-kurumsal .content-text {
    font-size: var(--text-lg);
    line-height: 1.8;
}

.page-kurumsal .content-text p {
    margin-bottom: var(--spacing-4);
}

.values-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-gray-50);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-8);
}

.value-item {
    text-align: center;
    padding: var(--spacing-8);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.value-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-4);
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
}

.value-item h3 {
    margin-bottom: var(--spacing-2);
}

.value-item p {
    color: var(--color-gray-500);
}

/* Iletisim */
.contact-info-section {
    padding: var(--spacing-10) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
}

.contact-item {
    text-align: center;
    padding: var(--spacing-8);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-4);
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
}

.contact-item h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-2);
}

.contact-link {
    display: block;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-2);
}

.contact-note {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.contact-cta {
    padding: var(--spacing-10) 0;
}

.cta-box {
    text-align: center;
    padding: var(--spacing-10);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    border-radius: var(--radius-xl);
}

.cta-box h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-3);
}

.cta-box p {
    margin-bottom: var(--spacing-6);
    color: var(--color-gray-200);
}

.cta-box .cta-button {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.cta-box .cta-button:hover {
    background-color: var(--color-secondary-dark);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 992px) {
    .proje-content-grid {
        grid-template-columns: 1fr;
    }

    .proje-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1.25rem;
    }

    .header-inner {
        flex-wrap: wrap;
    }

    .menu-toggle {
        display: flex;
    }

    .main-navigation {
        order: 3;
        width: 100%;
        display: none;
    }

    .main-navigation.active {
        display: block;
    }

    .main-navigation .primary-menu {
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-4) 0;
    }

    .main-navigation a {
        display: block;
        padding: var(--spacing-3) 0;
        border-bottom: 1px solid var(--color-gray-100);
    }

    .header-contact {
        display: none;
    }

    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-description {
        font-size: var(--text-base);
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .proje-title {
        font-size: var(--text-2xl);
    }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

/* ========================================
   10. 404 Error Page
   ======================================== */
.error-404 {
    padding: 100px 0;
    text-align: center;
}

.error-content {
    max-width: 500px;
    margin: 0 auto;
}

.error-title {
    font-size: 120px;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 20px;
}

.error-content h2 {
    margin-bottom: 10px;
}

.error-content p {
    color: var(--color-gray-500);
    margin-bottom: 30px;
}

.error-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.error-button {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    font-weight: 600;
}

.error-button:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.error-button-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.error-button-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.mb-4 {
    margin-bottom: var(--spacing-4);
}

.mb-8 {
    margin-bottom: var(--spacing-8);
}

.mt-0 {
    margin-top: 0;
}

.mt-4 {
    margin-top: var(--spacing-4);
}

.mt-8 {
    margin-top: var(--spacing-8);
}

/* ========================================
   Top Bar
   ======================================== */
.top-bar {
    background-color: var(--color-primary-dark);
    color: var(--color-gray-300);
    padding: var(--spacing-2) 0;
    font-size: var(--text-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    display: flex;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

.top-bar-item:hover {
    color: var(--color-white);
}

.top-bar-item i {
    color: var(--color-secondary);
}

.top-bar-right {
    display: flex;
    align-items: center;
}

.social-icons {
    display: flex;
    gap: var(--spacing-3);
}

.social-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-white);
    transition: all var(--transition-fast);
    font-size: 0.8em;
}

.social-item:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .top-bar-inner {
        flex-direction: column;
        gap: var(--spacing-2);
    }

    .top-bar-left {
        justify-content: center;
        width: 100%;
        gap: var(--spacing-4);
    }

    .top-bar-right {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   Footer Social
   ======================================== */
.footer-social {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.footer-social-item {
    background-color: var(--color-gray-700);
    color: var(--color-gray-300);
}

.footer-social-item:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

/* --- Homepage Project Grid --- */
.project-grid-parent {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(6, 1fr);
    gap: 8px;
    margin-bottom: 2rem;
    min-height: 500px;
}

.project-grid-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.project-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-grid-item:hover img {
    transform: scale(1.05);
}

.project-grid-item .grid-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 20px;
    color: #fff;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-grid-item:hover .grid-overlay {
    opacity: 1;
}

.project-grid-item .grid-title {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

/* Grid Yerlesimi */
.div1 {
    grid-column: span 5 / span 5;
    grid-row: span 6 / span 6;
}

.div2 {
    grid-column: span 2 / span 2;
    grid-row: span 3 / span 3;
    grid-column-start: 6;
}

.div3 {
    grid-column: span 2 / span 2;
    grid-row: span 3 / span 3;
    grid-column-start: 6;
    grid-row-start: 4;
}

/* Mobil / Tablet Uyumluluk */
@media (max-width: 768px) {
    .project-grid-parent {
        display: flex;
        flex-direction: column;
        gap: 16px;
        min-height: auto;
    }

    .div1,
    .div2,
    .div3 {
        grid-column: auto;
        grid-row: auto;
        width: 100%;
        height: 300px;
        /* Mobilde sabit yukseklik */
    }
}