/* ========================================
   PREMIUM UI/UX ENHANCEMENTS
   Yuki Izakaya - Full Premium Features
   ======================================== */

/* Premium Variables */
:root {
    --premium-blue: #0071e3;
    --premium-gold: #D4AF37;
    --premium-dark: #1d1d1f;
    --premium-light: #f5f5f7;

    --shadow-premium: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-premium-lg: 0 16px 48px rgba(0, 0, 0, 0.15);

    --transition-smooth: 500ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-fast: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Premium Button Styles */
.btn-premium {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-premium);
}

/* Ripple Effect */
.btn-premium::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-premium:active::before {
    width: 300px;
    height: 300px;
    transition: width 0s, height 0s;
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Glassmorphism Card */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-premium);
}

/* Premium Hover Card */
.hover-card {
    transition: all var(--transition-smooth);
}

.hover-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-premium-lg);
}

/* Magnetic Button Effect */
.magnetic-btn {
    transition: transform 0.1s ease-out;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--premium-gold) 0%, #FFD700 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Premium Badge */
.premium-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--premium-gold);
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--premium-gold);
}

/* Loading Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Pulse Animation for Notifications */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Premium Section Spacing */
.premium-section {
    padding: 80px 0;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: white;
    border-radius: 16px;
    transition: all var(--transition-smooth);
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-premium-lg);
    border-color: var(--premium-gold);
}

/* Premium Typography */
.premium-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.premium-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: #6e6e73;
    line-height: 1.5;
}

/* Hero Background Image */
.hero {
    position: relative;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.7);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.5) 0%,
        rgba(0, 0, 0, 0.3) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* About Section Enhancement */
.about-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-premium-lg);
    transition: all var(--transition-smooth);
}

.about-image:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .premium-section {
        padding: 48px 0;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .hero-bg-image {
        object-position: center;
    }

    .about-image:hover {
        transform: translateY(-4px);
    }
}