/* ========================================
   Premium CSS Effects - 프리미엄 인터랙션
   미래형 고퀄리티 CSS 효과
   ======================================== */

/* ===== 1. GLASSMORPHISM EFFECTS ===== */

/* Frosted Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
    transition: all var(--transition-base) var(--ease-out);
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transform: translateY(-4px);
}

/* Glass Navbar */
.navbar.glass {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

/* Glass Button */
.btn-glass {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
    transition: all var(--transition-base) var(--ease-out);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ===== 2. 3D HOVER EFFECTS ===== */

/* 3D Tilt Card */
.tilt-card {
    perspective: 1000px;
    transform-style: preserve-3d;
}

.tilt-card-inner {
    transition: transform var(--transition-slow) var(--ease-out);
    transform-style: preserve-3d;
}

.tilt-card:hover .tilt-card-inner {
    transform: rotateY(-5deg) rotateX(5deg) translateZ(20px);
}

/* 3D Depth Card */
.depth-card {
    position: relative;
    transform-style: preserve-3d;
    transition: all var(--transition-base) var(--ease-out);
}

.depth-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-primary);
    border-radius: inherit;
    transform: translateZ(-20px) scale(0.95);
    opacity: 0.2;
    transition: all var(--transition-base) var(--ease-out);
}

.depth-card:hover {
    transform: translateZ(10px);
}

.depth-card:hover::before {
    transform: translateZ(-30px) scale(0.9);
    opacity: 0.3;
}

/* Floating Card Effect */
.floating-card {
    position: relative;
    transition: all var(--transition-slow) cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-style: preserve-3d;
}

.floating-card::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 10%;
    width: 80%;
    height: 20px;
    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(8px);
    transition: all var(--transition-slow);
    z-index: -1;
}

.floating-card:hover {
    transform: translateY(-15px) rotateX(3deg);
}

.floating-card:hover::after {
    bottom: -25px;
    opacity: 0.7;
    transform: scale(1.1);
}

/* ===== 3. MAGNETIC BUTTON EFFECT ===== */

.magnetic-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5) var(--space-10);
    background: var(--color-primary-gradient);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-bold);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.075, 0.82, 0.165, 1);
    will-change: transform;
}

.magnetic-btn-text {
    position: relative;
    z-index: 2;
    transition: transform 0.4s cubic-bezier(0.075, 0.82, 0.165, 1);
}

.magnetic-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-primary-dark);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.magnetic-btn:hover::before {
    opacity: 1;
}

.magnetic-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300%;
    height: 300%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.5s ease;
}

.magnetic-btn:hover::after {
    transform: translate(-50%, -50%) scale(1);
}

/* ===== 4. ANIMATED GRADIENT BACKGROUNDS ===== */

/* Aurora Gradient */
.aurora-bg {
    background: linear-gradient(
        -45deg,
        #3d5a45,
        #4d6a55,
        #2d4435,
        #5d7a65,
        #3d5a45
    );
    background-size: 400% 400%;
    animation: auroraGradient 15s ease infinite;
}

@keyframes auroraGradient {
    0%, 100% {
        background-position: 0% 50%;
    }
    25% {
        background-position: 100% 0%;
    }
    50% {
        background-position: 100% 100%;
    }
    75% {
        background-position: 0% 100%;
    }
}

/* Mesh Gradient */
.mesh-gradient-bg {
    background: 
        radial-gradient(at 40% 20%, rgba(61, 90, 69, 0.3) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(77, 106, 85, 0.25) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(45, 68, 53, 0.2) 0px, transparent 50%),
        radial-gradient(at 80% 50%, rgba(93, 122, 101, 0.25) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(61, 90, 69, 0.3) 0px, transparent 50%),
        radial-gradient(at 80% 100%, rgba(77, 106, 85, 0.2) 0px, transparent 50%);
    animation: meshMove 20s ease infinite;
}

@keyframes meshMove {
    0%, 100% {
        background-position: 0% 0%, 100% 0%, 0% 50%, 100% 50%, 0% 100%, 100% 100%;
    }
    50% {
        background-position: 100% 100%, 0% 100%, 100% 50%, 0% 50%, 100% 0%, 0% 0%;
    }
}

/* Dynamic Gradient Text */
.gradient-text {
    background: linear-gradient(
        90deg,
        var(--color-primary) 0%,
        var(--color-primary-light) 50%,
        var(--color-primary) 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientText 3s linear infinite;
}

@keyframes gradientText {
    0% {
        background-position: 0% center;
    }
    100% {
        background-position: 200% center;
    }
}

/* ===== 5. SCROLL-LINKED ANIMATIONS ===== */

/* Scroll Reveal - Fade Up */
.scroll-reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: 
        opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Scroll Reveal - Fade Scale */
.scroll-reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: 
        opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* Scroll Reveal - Slide Left */
.scroll-reveal-left {
    opacity: 0;
    transform: translateX(-80px);
    transition: 
        opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Scroll Reveal - Slide Right */
.scroll-reveal-right {
    opacity: 0;
    transform: translateX(80px);
    transition: 
        opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Stagger Reveal for Grid Items */
.stagger-reveal > * {
    opacity: 0;
    transform: translateY(40px);
    transition: 
        opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.stagger-reveal.revealed > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-reveal.revealed > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-reveal.revealed > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-reveal.revealed > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-reveal.revealed > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-reveal.revealed > *:nth-child(6) { transition-delay: 0.3s; }
.stagger-reveal.revealed > *:nth-child(7) { transition-delay: 0.35s; }
.stagger-reveal.revealed > *:nth-child(8) { transition-delay: 0.4s; }

.stagger-reveal.revealed > * {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 6. HOVER GLOW EFFECTS ===== */

/* Soft Glow */
.hover-glow-soft {
    transition: box-shadow var(--transition-base) var(--ease-out);
}

.hover-glow-soft:hover {
    box-shadow: 
        0 0 20px rgba(61, 90, 69, 0.2),
        0 0 40px rgba(61, 90, 69, 0.1);
}

/* Intense Glow */
.hover-glow-intense {
    transition: box-shadow var(--transition-base) var(--ease-out);
}

.hover-glow-intense:hover {
    box-shadow: 
        0 0 30px rgba(61, 90, 69, 0.35),
        0 0 60px rgba(61, 90, 69, 0.2),
        0 0 80px rgba(61, 90, 69, 0.1);
}

/* Border Glow */
.hover-border-glow {
    position: relative;
    overflow: hidden;
}

.hover-border-glow::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(
        90deg,
        var(--color-primary),
        var(--color-primary-light),
        var(--color-primary)
    );
    background-size: 200% 100%;
    border-radius: inherit;
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.hover-border-glow:hover::before {
    opacity: 1;
    animation: borderGlow 2s linear infinite;
}

@keyframes borderGlow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* ===== 7. MICRO INTERACTIONS ===== */

/* Icon Pop */
.icon-pop {
    transition: transform var(--transition-base) cubic-bezier(0.34, 1.56, 0.64, 1);
}

.icon-pop:hover {
    transform: scale(1.2) rotate(10deg);
}

/* Text Reveal */
.text-reveal {
    position: relative;
    overflow: hidden;
}

.text-reveal::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-base) var(--ease-out);
}

.text-reveal:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Ripple Effect */
.ripple-effect {
    position: relative;
    overflow: hidden;
}

.ripple-effect::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
}

.ripple-effect:active::after {
    animation: rippleEffect 0.6s ease-out;
}

@keyframes rippleEffect {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(40);
        opacity: 0;
    }
}

/* ===== 8. PARALLAX EFFECTS ===== */

.parallax-wrapper {
    overflow: hidden;
    perspective: 1px;
    height: 100%;
}

.parallax-slow {
    --parallax-speed: 0.3;
    will-change: transform;
}

.parallax-medium {
    --parallax-speed: 0.5;
    will-change: transform;
}

.parallax-fast {
    --parallax-speed: 0.8;
    will-change: transform;
}

/* ===== 9. LOADING ANIMATIONS ===== */

/* Premium Loader */
.premium-loader {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-primary-pale);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: premiumSpin 1s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}

@keyframes premiumSpin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Pulse Loader */
.pulse-loader {
    display: flex;
    gap: 8px;
}

.pulse-loader span {
    width: 12px;
    height: 12px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulseLoader 1.4s ease-in-out infinite;
}

.pulse-loader span:nth-child(1) { animation-delay: 0s; }
.pulse-loader span:nth-child(2) { animation-delay: 0.2s; }
.pulse-loader span:nth-child(3) { animation-delay: 0.4s; }

@keyframes pulseLoader {
    0%, 100% {
        transform: scale(0.6);
        opacity: 0.4;
    }
    50% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ===== 10. PREMIUM CARD STYLES ===== */

/* Neumorphism Card */
.neumorphic-card {
    background: #f0f0f3;
    border-radius: var(--radius-xl);
    box-shadow: 
        8px 8px 20px rgba(0, 0, 0, 0.1),
        -8px -8px 20px rgba(255, 255, 255, 0.9);
    transition: all var(--transition-base) var(--ease-out);
}

.neumorphic-card:hover {
    box-shadow: 
        12px 12px 24px rgba(0, 0, 0, 0.12),
        -12px -12px 24px rgba(255, 255, 255, 1);
}

/* Holographic Card */
.holographic-card {
    position: relative;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.1),
        rgba(255, 255, 255, 0.4)
    );
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.holographic-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255, 255, 255, 0.3) 45%,
        rgba(255, 255, 255, 0.6) 50%,
        rgba(255, 255, 255, 0.3) 55%,
        transparent 60%
    );
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.holographic-card:hover::before {
    transform: translateX(100%);
}

/* Premium Pricing Card */
.premium-pricing-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    overflow: hidden;
    transition: all var(--transition-slow) var(--ease-out);
    box-shadow: var(--shadow-lg);
}

.premium-pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--color-primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow) var(--ease-out);
}

.premium-pricing-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-2xl);
}

.premium-pricing-card:hover::before {
    transform: scaleX(1);
}

.premium-pricing-card.featured {
    border: 2px solid var(--color-primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl), var(--shadow-glow-lg);
}

.premium-pricing-card.featured::before {
    transform: scaleX(1);
}

/* ===== 11. TEXT ANIMATIONS ===== */

/* Split Text Reveal */
.split-reveal {
    overflow: hidden;
}

.split-reveal span {
    display: inline-block;
    transform: translateY(100%);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.split-reveal.revealed span {
    transform: translateY(0);
    opacity: 1;
}

/* Typewriter with Cursor */
.typewriter-premium {
    position: relative;
    display: inline-block;
}

.typewriter-premium::after {
    content: '|';
    position: absolute;
    right: -5px;
    color: var(--color-primary);
    animation: typewriterCursor 0.8s infinite;
}

@keyframes typewriterCursor {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ===== 12. NOISE TEXTURE OVERLAY ===== */

.noise-overlay {
    position: relative;
}

.noise-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    mix-blend-mode: multiply;
}

/* ===== 13. SPRING ANIMATION UTILITIES ===== */

.spring-bounce {
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.spring-bounce:hover {
    transform: scale(1.08);
}

.spring-elastic {
    transition: transform 0.6s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.spring-elastic:hover {
    transform: translateY(-10px);
}

/* ===== 14. FOCUS STATES (Premium) ===== */

.premium-focus:focus-visible {
    outline: none;
    box-shadow: 
        0 0 0 3px var(--color-white),
        0 0 0 6px var(--color-primary);
}

/* ===== 15. SMOOTH SCROLL INDICATOR ===== */

.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: var(--color-primary-gradient);
    z-index: var(--z-max);
    transition: width 0.1s ease;
}

/* ===== 16. CINEMATIC HERO EFFECTS ===== */

.hero-cinematic {
    position: relative;
    overflow: hidden;
}

.hero-cinematic::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle at center,
        rgba(61, 90, 69, 0.1) 0%,
        transparent 50%
    );
    animation: cinematicGlow 10s ease infinite;
}

@keyframes cinematicGlow {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(10%, 10%) scale(1.1);
    }
    66% {
        transform: translate(-5%, 5%) scale(0.95);
    }
}

/* ===== 17. CURSOR EFFECTS (Optional) ===== */

.custom-cursor-area {
    cursor: none;
}

/* ===== REDUCED MOTION ===== */

@media (prefers-reduced-motion: reduce) {
    .scroll-reveal,
    .scroll-reveal-scale,
    .scroll-reveal-left,
    .scroll-reveal-right,
    .stagger-reveal > *,
    .aurora-bg,
    .mesh-gradient-bg,
    .gradient-text,
    .premium-loader,
    .pulse-loader span,
    .hero-cinematic::before {
        animation: none !important;
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    
    .floating-card:hover,
    .tilt-card:hover .tilt-card-inner,
    .depth-card:hover,
    .magnetic-btn:hover,
    .spring-bounce:hover,
    .spring-elastic:hover {
        transform: none !important;
    }
}

/* ===== PERFORMANCE HINTS ===== */

.gpu-boost {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
    will-change: transform, opacity;
}

/* Use containment for complex components */
.layout-contain {
    contain: layout style paint;
}

.strict-contain {
    contain: strict;
}