/* ==========================================================================
   premium monochrome design system
   ========================================================================== */

:root {
    /* Color Palette: Dark luxury monochrome */
    --bg-dark: #0a0a0c;
    --bg-darker: #050506;
    --text-primary: #f4f4f5;
    --text-muted: #71717a;
    --text-dim: #3f3f46;
    --border-color: rgba(255, 255, 255, 0.04);
    --border-accent: rgba(255, 255, 255, 0.08);
    --glow-color: rgba(255, 255, 255, 0.03);
    --glow-soft: rgba(255, 255, 255, 0.015);
    
    /* Typography */
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Animation easings */
    --ease-premium: cubic-bezier(0.25, 1, 0.5, 1);
}

/* ==========================================================================
   reset & base styling
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    width: 100%;
    overflow: hidden; /* Lock viewport to single page */
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Minimal tech grid overlay for an expensive texture feel */
.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.01) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 1;
}

/* Soft ambient atmospheric glows */
.ambient-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    pointer-events: none;
    z-index: 2;
    opacity: 0.4;
}

.bg-glow-left {
    width: 50vw;
    height: 50vw;
    top: -10vw;
    left: -10vw;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, rgba(0, 0, 0, 0) 70%);
}

.bg-glow-right {
    width: 60vw;
    height: 60vw;
    bottom: -15vw;
    right: -10vw;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.02) 0%, rgba(0, 0, 0, 0) 70%);
}

/* ==========================================================================
   background elements & parallax layers
   ========================================================================== */

#bg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
}

.parallax-layer {
    position: absolute;
    will-change: transform;
    display: flex;
    justify-content: center;
    align-items: center;
}

.element-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    transition: filter 0.8s var(--ease-premium);
    pointer-events: auto; /* Enable interactive clicks/hovers for children */
}

/* Responsive scaling & layout placement */
.element-watch {
    top: 12%;
    left: 10%;
    width: min(240px, 24vw);
    height: min(240px, 24vw);
    animation: gentle-drift-watch 24s ease-in-out infinite alternate;
}

.element-perfume {
    top: 10%;
    right: 12%;
    width: min(220px, 22vw);
    height: min(260px, 26vw);
    animation: gentle-drift-perfume 28s ease-in-out infinite alternate;
}

.element-coffee {
    bottom: 12%;
    left: 14%;
    width: min(220px, 22vw);
    height: min(220px, 22vw);
    animation: gentle-drift-coffee 20s ease-in-out infinite alternate;
}

.element-books {
    bottom: 10%;
    right: 14%;
    width: min(240px, 24vw);
    height: min(240px, 24vw);
    animation: gentle-drift-books 26s ease-in-out infinite alternate;
}

/* Base class for vector artwork */
.svg-element {
    width: 100%;
    height: 100%;
    opacity: 0.82;
    transition: opacity 0.8s var(--ease-premium), filter 0.8s var(--ease-premium);
    filter: grayscale(1) brightness(1.8) contrast(1.15);
}

/* Subtle mouse hover responsiveness through parent elements */
body:has(.interactive-glass-card:hover) .svg-element {
    opacity: 0.48;
    filter: grayscale(1) brightness(1.2) contrast(1.0) blur(1px);
}

/* ==========================================================================
   individual element animations
   ========================================================================== */

/* 1. Watch Gear Spins */
.gear-large {
    transform-origin: 0px 0px;
    animation: gear-spin-cw 35s linear infinite;
}

.gear-small {
    transform-origin: 0px 0px;
    animation: gear-spin-ccw 22s linear infinite;
}

@keyframes gear-spin-cw {
    from { transform: translate(85px, 105px) rotate(0deg); }
    to { transform: translate(85px, 105px) rotate(360deg); }
}

@keyframes gear-spin-ccw {
    from { transform: translate(125px, 75px) rotate(0deg); }
    to { transform: translate(125px, 75px) rotate(-360deg); }
}

/* 2. Rising Coffee Steam */
.steam-trail {
    stroke-dasharray: 120;
    stroke-dashoffset: 120;
    will-change: stroke-dashoffset, opacity;
}

.steam-1 {
    animation: steam-flow-left 6.5s ease-in-out infinite;
}

.steam-2 {
    animation: steam-flow-mid 7.5s ease-in-out infinite 2s;
}

.steam-3 {
    animation: steam-flow-right 6s ease-in-out infinite 4s;
}

@keyframes steam-flow-left {
    0% {
        stroke-dashoffset: 120;
        opacity: 0;
        transform: translateY(2px) scaleX(0.95);
    }
    15% {
        opacity: 0.45;
    }
    50% {
        opacity: 0.65;
        transform: translateY(-8px) scaleX(1.05) skewX(-2deg);
    }
    75% {
        opacity: 0.25;
    }
    100% {
        stroke-dashoffset: -120;
        opacity: 0;
        transform: translateY(-24px) scaleX(0.85) skewX(4deg);
    }
}

@keyframes steam-flow-mid {
    0% {
        stroke-dashoffset: 120;
        opacity: 0;
        transform: translateY(2px) scaleX(1);
    }
    20% {
        opacity: 0.55;
    }
    50% {
        opacity: 0.7;
        transform: translateY(-10px) scaleX(1.1) skewX(2deg);
    }
    80% {
        opacity: 0.2;
    }
    100% {
        stroke-dashoffset: -120;
        opacity: 0;
        transform: translateY(-28px) scaleX(0.9) skewX(-3deg);
    }
}

@keyframes steam-flow-right {
    0% {
        stroke-dashoffset: 120;
        opacity: 0;
        transform: translateY(2px) scaleX(0.9);
    }
    15% {
        opacity: 0.45;
    }
    50% {
        opacity: 0.6;
        transform: translateY(-7px) scaleX(1.05) skewX(3deg);
    }
    70% {
        opacity: 0.2;
    }
    100% {
        stroke-dashoffset: -120;
        opacity: 0;
        transform: translateY(-22px) scaleX(0.85) skewX(-2deg);
    }
}

/* 3. Swaying Bookmark Ribbon */
#bookmark-ribbon {
    animation: bookmark-sway 9s ease-in-out infinite alternate;
}

@keyframes bookmark-sway {
    0% { transform: rotate(0deg) skewX(0deg); }
    50% { transform: rotate(2.5deg) skewX(1.5deg); }
    100% { transform: rotate(-1.5deg) skewX(-1deg); }
}

/* 4. Perfume Bottle Glass Shimmer */
.perfume-shimmer {
    animation: shimmer-swipe 10s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    transform-origin: center;
}

@keyframes shimmer-swipe {
    0% { transform: translate(-80px, -80px) rotate(0deg); opacity: 0; }
    5% { opacity: 0.8; }
    25% { transform: translate(80px, 80px) rotate(0deg); opacity: 0; }
    100% { transform: translate(80px, 80px) rotate(0deg); opacity: 0; }
}

/* Ambient Floating/Drifting for Background Elements */
@keyframes gentle-drift-watch {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-8px) rotate(0.8deg); }
}

@keyframes gentle-drift-perfume {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(9px) rotate(-0.6deg); }
}

@keyframes gentle-drift-coffee {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-6px) rotate(-0.5deg); }
}

@keyframes gentle-drift-books {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(7px) rotate(0.4deg); }
}

/* ==========================================================================
   central hero container & glassmorphic layout
   ========================================================================== */

.hero-container {
    position: relative;
    z-index: 10;
    width: 90%;
    max-width: 580px;
    perspective: 1000px;
}

.interactive-glass-card {
    position: relative;
    padding: 3.5rem 3rem;
    background: rgba(10, 10, 12, 0.35);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transform-style: preserve-3d;
    transition: 
        transform 0.5s var(--ease-premium), 
        border-color 0.8s var(--ease-premium),
        box-shadow 0.8s var(--ease-premium);
}

.interactive-glass-card:hover {
    border-color: var(--border-accent);
    box-shadow: 
        0 40px 80px rgba(0, 0, 0, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 0 40px rgba(255, 255, 255, 0.015);
}

/* Subtle corner accent border lines */
.card-border-line {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    border: 1px solid rgba(255, 255, 255, 0.015);
    border-radius: 12px;
    pointer-events: none;
    transition: border-color 0.8s var(--ease-premium);
}

.interactive-glass-card:hover .card-border-line {
    border-color: rgba(255, 255, 255, 0.03);
}

/* Studio Accent Indicator */
.aesthetic-indicator {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-dim);
    letter-spacing: 0.35em;
    margin-bottom: 1.5rem;
    display: inline-block;
    transition: color 0.6s var(--ease-premium);
}

.interactive-glass-card:hover .aesthetic-indicator {
    color: var(--text-muted);
}

/* Main Name Typography Styling */
.main-name {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(2.2rem, 6.5vw, 3.8rem);
    color: var(--text-primary);
    text-align: center;
    letter-spacing: -0.01em;
    line-height: 1.1;
    margin-bottom: 1.2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    user-select: none;
}

/* Staggered text-reveal fade in */
.char-span {
    display: inline-block;
    transition: 
        transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), 
        color 0.3s ease, 
        text-shadow 0.3s ease;
    cursor: default;
    will-change: transform;
}

.char-space {
    width: 0.28em;
    display: inline-block;
}

/* Playful premium hover character expansion */
.char-span:hover {
    color: #ffffff;
    transform: translateY(-5px) scale(1.15);
    text-shadow: 0 5px 15px rgba(255, 255, 255, 0.3);
}

/* Divider Line layout */
.divider-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--text-dim), transparent);
    margin: 0.8rem 0 1.2rem 0;
    transition: width 0.8s var(--ease-premium), background 0.8s var(--ease-premium);
}

.interactive-glass-card:hover .divider-line {
    width: 140px;
    background: linear-gradient(90deg, transparent, var(--text-muted), transparent);
}

/* Subtitle Styling */
.minimal-subtitle {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 300;
    color: var(--text-muted);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    text-align: center;
    transition: color 0.6s var(--ease-premium);
}

.interactive-glass-card:hover .minimal-subtitle {
    color: var(--text-primary);
}

/* Dynamic Interactive Particles (mist, light shimmers spawned via JS) */
.mist-particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    pointer-events: none;
    z-index: 5;
    will-change: transform, opacity;
}

/* ==========================================================================
   responsive layout adaptations
   ========================================================================== */

@media (max-width: 900px) {
    .element-watch {
        top: 8%;
        left: 6%;
        width: 160px;
        height: 160px;
    }
    .element-perfume {
        top: 8%;
        right: 6%;
        width: 150px;
        height: 180px;
    }
    .element-coffee {
        bottom: 8%;
        left: 8%;
        width: 150px;
        height: 150px;
    }
    .element-books {
        bottom: 8%;
        right: 8%;
        width: 160px;
        height: 160px;
    }
}

@media (max-width: 680px) {
    body {
        overflow: hidden;
    }
    
    .interactive-glass-card {
        padding: 2.5rem 1.8rem;
        background: rgba(10, 10, 12, 0.5);
    }
    
    /* Background elements scale down and sink deeper to prevent visual clutter */
    .svg-element {
        opacity: 0.55;
        filter: grayscale(1) brightness(1.5) contrast(1.1);
    }
    
    body:has(.interactive-glass-card:hover) .svg-element {
        opacity: 0.30;
        filter: grayscale(1) brightness(1.1) contrast(1.0) blur(1.2px);
    }
    
    .element-watch {
        top: 10%;
        left: 5%;
        width: 110px;
        height: 110px;
    }
    .element-perfume {
        top: 9%;
        right: 5%;
        width: 105px;
        height: 125px;
    }
    .element-coffee {
        bottom: 10%;
        left: 6%;
        width: 105px;
        height: 105px;
    }
    .element-books {
        bottom: 8%;
        right: 6%;
        width: 115px;
        height: 115px;
    }
    
    .main-name {
        letter-spacing: -0.02em;
    }
}