/**
 * Ana Stil Dosyası
 * Premium Diş Kliniği
 */

/* ===== GENEL AYARLAR ===== */
:root {
    --lacivert: #1e3a5f;
    --mavi: #0891b2;
    --acik-mavi: #e0f7fa;
    --acik-gri: #f8fafc;
    --koyu-gri: #64748b;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Font */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #374151;
    line-height: 1.6;
}

/* ===== NAV LİNKLER ===== */
.nav-link {
    position: relative;
    padding: 0.5rem 0;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--lacivert);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--mavi);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--mavi);
}

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

/* Mobil Nav Link */
.mobile-nav-link {
    display: block;
    padding: 1rem 0;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--lacivert);
    border-bottom: 1px solid #e5e7eb;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.mobile-nav-link:hover {
    color: var(--mavi);
    padding-left: 0.5rem;
}

/* ===== HERO SLIDER ===== */
.hero-slider {
    background-color: var(--acik-gri);
}

.slider-slide {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.slider-slide.active {
    display: block;
    opacity: 1;
}

/* ===== HİZMET KARTI ===== */
.hizmet-kart {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hizmet-kart:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* ===== ÖZEL RENKLER ===== */
.bg-lacivert {
    background-color: var(--lacivert);
}

.bg-mavi {
    background-color: var(--mavi);
}

.bg-acik-gri {
    background-color: var(--acik-gri);
}

.text-lacivert {
    color: var(--lacivert);
}

.text-mavi {
    color: var(--mavi);
}

/* ===== BUTONLAR ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    background-color: var(--lacivert);
    color: white;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--mavi);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(8, 145, 178, 0.3);
}

/* ===== SCROLL TOP BUTON ===== */
#scrollTop.visible {
    opacity: 1;
    visibility: visible;
}

/* ===== ANİMASYONLAR ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* ===== RESPONSİVE DÜZENLEMELER ===== */
@media (max-width: 1024px) {
    .hero-slider .grid {
        min-height: 400px;
    }
}

@media (max-width: 640px) {
    .hero-slider h1 {
        font-size: 1.75rem;
    }
    
    .hizmet-kart .aspect-\[4\/3\] {
        aspect-ratio: 16 / 9;
    }
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--lacivert);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--mavi);
}

/* ===== LOADING STATE ===== */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}