/* ============================================
   Fren Test Merkezi - Modern CSS
   100% Responsive & SEO Friendly
   ============================================ */

/* CSS Variables */
:root {
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --secondary-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --white-color: #ffffff;
    --text-color: #374151;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white-color);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.top-bar {
    background: var(--dark-color);
    color: var(--white-color);
    padding: 10px 0;
    font-size: 14px;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.top-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--white-color);
    opacity: 0.9;
}

.top-link:hover {
    opacity: 1;
}

.social-link {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.navbar {
    padding: 15px 0;
    background: var(--white-color);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-color);
}

.logo i {
    font-size: 32px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-weight: 500;
    color: var(--dark-color);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark-color);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 16px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--white-color);
}

.btn-secondary:hover {
    background: #d97706;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white-color);
}

.btn-lg {
    padding: 15px 40px;
    font-size: 18px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white-color);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-color);
    opacity: 0.8;
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 30px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Cards */
.card {
    background: var(--white-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 12px;
}

.card-text {
    color: var(--text-color);
    line-height: 1.7;
    margin-bottom: 15px;
}

/* Service Card */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 12px 12px 0 0;
}

.service-content {
    padding: 25px;
}

.service-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--secondary-color);
    color: var(--white-color);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    font-family: var(--font-primary);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30,64,175,0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-select {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor"><path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd"/></svg>');
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 40px;
}

/* Flash Messages */
.flash-message {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    width: 90%;
    max-width: 600px;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.flash-content {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    border-radius: 8px;
    background: var(--white-color);
    box-shadow: var(--shadow-lg);
}

.flash-success .flash-content {
    border-left: 4px solid var(--success-color);
}

.flash-error .flash-content {
    border-left: 4px solid var(--danger-color);
}

.flash-content i {
    font-size: 24px;
}

.flash-success i {
    color: var(--success-color);
}

.flash-error i {
    color: var(--danger-color);
}

.flash-close {
    margin-left: auto;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.5;
    transition: var(--transition);
}

.flash-close:hover {
    opacity: 1;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: var(--white-color);
}

.footer-top {
    padding: 60px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.footer-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-text {
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-heading {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    opacity: 0.9;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    opacity: 0.9;
}

.footer-contact i {
    color: var(--secondary-color);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    opacity: 0.8;
    font-size: 14px;
}

.developer a {
    color: var(--secondary-color);
}

/* Float Buttons */
.whatsapp-float,
.call-float {
    position: fixed;
    bottom: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white-color);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-float {
    right: 30px;
    background: #25D366;
}

.call-float {
    right: 110px;
    background: var(--primary-color);
    display: none;
}

.whatsapp-float:hover,
.call-float:hover {
    transform: translateY(-5px) scale(1.1);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar-content {
        justify-content: center;
        text-align: center;
    }
    
    .top-bar-left,
    .top-bar-right {
        flex-direction: column;
        gap: 10px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white-color);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 30px 30px;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .call-float {
        display: flex;
        right: 30px;
        bottom: 110px;
    }
    
    .whatsapp-float {
        bottom: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .btn-lg {
        padding: 12px 25px;
        font-size: 16px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.pt-1 { padding-top: 10px; }
.pt-2 { padding-top: 20px; }
.pb-1 { padding-bottom: 10px; }
.pb-2 { padding-bottom: 20px; }

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Page Breadcrumb */
.breadcrumb {
    background: var(--light-color);
    padding: 15px 0;
    font-size: 14px;
}

.breadcrumb-list {
    display: flex;
    gap: 10px;
    align-items: center;
}

.breadcrumb-list li:not(:last-child)::after {
    content: '/';
    margin-left: 10px;
    color: var(--text-color);
    opacity: 0.5;
}

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

/* Flash Messages - Kullanıcı Tarafı Profesyonel Bildirimler */
.flash-message {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 99999;
    min-width: 350px;
    max-width: 500px;
    animation: slideInRight 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    border-radius: 12px;
    overflow: hidden;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.flash-content {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 18px 20px;
    background: white;
    position: relative;
}

.flash-content i {
    font-size: 24px;
    flex-shrink: 0;
}

.flash-content span {
    flex: 1;
    font-size: 15px;
    line-height: 1.5;
    font-weight: 500;
}

.flash-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.flash-close:hover {
    opacity: 1;
}

/* Success - Yeşil */
.flash-success {
    border-left: 5px solid #10b981;
}

.flash-success .flash-content {
    background: linear-gradient(135deg, #ecfdf5 0%, #ffffff 100%);
}

.flash-success i {
    color: #10b981;
}

.flash-success span {
    color: #065f46;
}

.flash-success .flash-close {
    color: #059669;
}

/* Danger/Error - Kırmızı */
.flash-danger {
    border-left: 5px solid #ef4444;
}

.flash-danger .flash-content {
    background: linear-gradient(135deg, #fef2f2 0%, #ffffff 100%);
}

.flash-danger i {
    color: #ef4444;
}

.flash-danger span {
    color: #991b1b;
}

.flash-danger .flash-close {
    color: #dc2626;
}

/* Warning - Sarı/Turuncu */
.flash-warning {
    border-left: 5px solid #f59e0b;
}

.flash-warning .flash-content {
    background: linear-gradient(135deg, #fffbeb 0%, #ffffff 100%);
}

.flash-warning i {
    color: #f59e0b;
}

.flash-warning span {
    color: #78350f;
}

.flash-warning .flash-close {
    color: #d97706;
}

/* Info - Mavi */
.flash-info {
    border-left: 5px solid #3b82f6;
}

.flash-info .flash-content {
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
}

.flash-info i {
    color: #3b82f6;
}

.flash-info span {
    color: #1e40af;
}

.flash-info .flash-close {
    color: #2563eb;
}

/* Responsive Flash Messages */
@media (max-width: 576px) {
    .flash-message {
        top: 80px;
        right: 10px;
        left: 10px;
        min-width: auto;
        max-width: none;
    }
    
    .flash-content {
        padding: 15px;
    }
    
    .flash-content i {
        font-size: 20px;
    }
    
    .flash-content span {
        font-size: 14px;
    }
}