/* ==========================================
   York Business School - Design System
   Premium · Glassmorphism · Micro-animations
   ========================================== */

/* ---- Glass Effect ---- */
.glass-nav {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
[data-theme="dark"] .glass-nav {
    background: rgba(10, 22, 40, 0.8);
}

.glass-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
}
[data-theme="dark"] .glass-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

/* ---- Navigation ---- */
.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #475569;
    transition: all 0.2s ease;
}
[data-theme="dark"] .nav-link {
    color: #94a3b8;
}
.nav-link:hover {
    background: rgba(0, 0, 0, 0.04);
    color: #0a1628;
}
[data-theme="dark"] .nav-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
}
.nav-link-active {
    color: #00d4ff !important;
    background: rgba(0, 212, 255, 0.08) !important;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: #475569;
    transition: all 0.2s ease;
}
[data-theme="dark"] .mobile-nav-link { color: #94a3b8; }
.mobile-nav-link:hover, .mobile-nav-active {
    background: rgba(0, 212, 255, 0.08);
    color: #00d4ff;
}

/* ---- Animations ---- */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}
@keyframes float-delayed {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}
.animate-float { animation: float 6s ease-in-out infinite; }
.animate-float-delayed { animation: float-delayed 5s ease-in-out 1s infinite; }

/* Fade In on Scroll */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.15s; }
.fade-in-delay-2 { transition-delay: 0.3s; }

/* ---- Form Styles ---- */
.form-input:focus {
    outline: none;
}
select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394a3b8' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0, 212, 255, 0.3); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 212, 255, 0.5); }

/* ---- Line Clamp ---- */
.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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