/* ============================================
   miris.studio — Ethereal Alpine Glassmorphism
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --mountain-violet: #2d1b69;
    --periwinkle-mist: #b8a9e8;
    --alpine-frost: #f0eef8;
    --frosted-lilac: #e6e0f3;
    --alpenglow-rose: #e8a0b4;
    --dusk-indigo: #1a1040;
    --haze-lavender: #7b6fa0;
    --twilight-orchid: #6c4ab6;
    --warm-valley: #f5f0fa;
    --ease-mist: cubic-bezier(0.22, 1, 0.36, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 400;
    color: var(--dusk-indigo);
    background-color: var(--alpine-frost);
    overflow-x: hidden;
    line-height: 1.75;
    font-size: clamp(1rem, 1.6vw, 1.2rem);
}

/* --- Mist Zone (Hero) --- */
#mist-zone {
    position: relative;
    width: 100%;
    height: 100vh;
    background: linear-gradient(165deg, #6c4ab6 0%, #b8a9e8 45%, #e8a0b4 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    overflow: hidden;
    z-index: 10;
}

@keyframes gradientShift {
    0%, 100% { filter: hue-rotate(0deg); }
    50% { filter: hue-rotate(12deg); }
}

#mist-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    animation: gradientShift 20s ease-in-out infinite;
    z-index: 0;
}

#hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-title {
    font-family: 'Quicksand', sans-serif;
    font-weight: 700;
    font-size: clamp(4rem, 10vw, 8rem);
    color: var(--alpine-frost);
    letter-spacing: 0.04em;
    text-transform: lowercase;
    line-height: 1;
    margin-bottom: 0.15em;
}

.hero-subtitle {
    font-family: 'Comfortaa', cursive;
    font-weight: 300;
    font-size: 0.9rem;
    color: var(--frosted-lilac);
    letter-spacing: 0.3em;
    text-transform: lowercase;
}

/* --- Scroll Indicator --- */
#scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-line {
    display: block;
    width: 1px;
    height: 40px;
    background: rgba(240, 238, 248, 0.5);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: translateY(0); }
    50% { opacity: 0.8; transform: translateY(8px); }
}

/* --- Mist Particles --- */
#mist-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.mist-particle {
    position: absolute;
    border-radius: 50%;
    background: var(--periwinkle-mist);
    filter: blur(2px);
    pointer-events: none;
}

@keyframes floatUp {
    0% {
        transform: translate(var(--drift-x, 0px), 0);
        opacity: 0;
    }
    10% {
        opacity: var(--particle-opacity, 0.3);
    }
    90% {
        opacity: var(--particle-opacity, 0.3);
    }
    100% {
        transform: translate(calc(var(--drift-x, 0px) * -1), -110vh);
        opacity: 0;
    }
}

/* --- Navigation Pill --- */
#nav-pill {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 100;
    background: rgba(230, 224, 243, 0.55);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1px solid rgba(184, 169, 232, 0.35);
    border-radius: 100px;
    padding: 8px 20px;
    display: flex;
    gap: 20px;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.5s var(--ease-mist), transform 0.5s var(--ease-mist);
    pointer-events: none;
}

#nav-pill.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

#nav-pill a {
    font-family: 'Comfortaa', cursive;
    font-weight: 300;
    font-size: clamp(0.75rem, 1.2vw, 0.9rem);
    letter-spacing: 0.06em;
    text-transform: lowercase;
    color: var(--dusk-indigo);
    text-decoration: none;
    transition: color 0.3s var(--ease-mist);
}

#nav-pill a:hover {
    color: var(--twilight-orchid);
}

/* --- Mountain Silhouettes --- */
#mountain-layers {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 320px;
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.8s var(--ease-mist);
}

#mountain-layers.visible {
    opacity: 1;
}

.mountain-layer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.mountain-layer-1 path {
    fill: var(--mountain-violet);
    opacity: 0.15;
}

.mountain-layer-2 path {
    fill: var(--twilight-orchid);
    opacity: 0.10;
}

.mountain-layer-3 path {
    fill: var(--periwinkle-mist);
    opacity: 0.08;
}

@keyframes mountainSway1 {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(-15px); }
}
@keyframes mountainSway2 {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(10px); }
}
@keyframes mountainSway3 {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(-8px); }
}

.mountain-layer-1 { animation: mountainSway1 45s ease-in-out infinite; }
.mountain-layer-2 { animation: mountainSway2 60s ease-in-out infinite; }
.mountain-layer-3 { animation: mountainSway3 80s ease-in-out infinite; }

/* --- Gradient Orbs --- */
#gradient-orbs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, #6c4ab6 0%, transparent 70%);
    opacity: 0.06;
}

.orb-1 {
    width: 400px;
    height: 400px;
    top: 30%;
    left: 10%;
}

.orb-2 {
    width: 300px;
    height: 300px;
    top: 50%;
    right: 15%;
}

.orb-3 {
    width: 250px;
    height: 250px;
    top: 70%;
    left: 40%;
    background: radial-gradient(circle, #e8a0b4 0%, transparent 70%);
}

/* --- Halo Rings --- */
#halo-rings {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.halo-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--periwinkle-mist);
}

.halo-ring-1 {
    width: 500px;
    height: 500px;
    top: 25%;
    left: 20%;
    opacity: 0.07;
}

.halo-ring-2 {
    width: 350px;
    height: 350px;
    top: 45%;
    right: 10%;
    opacity: 0.05;
}

.halo-ring-3 {
    width: 600px;
    height: 600px;
    top: 60%;
    left: 5%;
    opacity: 0.04;
}

/* --- Reveal Zone (Card Grid) --- */
#reveal-zone {
    position: relative;
    z-index: 5;
    padding: clamp(80px, 10vw, 160px) clamp(20px, 5vw, 80px);
    min-height: 100vh;
    background: transparent;
}

.section-heading {
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: var(--dusk-indigo);
    letter-spacing: 0.04em;
    text-align: center;
    margin-bottom: clamp(40px, 5vw, 80px);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: clamp(24px, 3vw, 48px);
    max-width: 1200px;
    margin: 0 auto;
}

/* --- Glass Cards --- */
.glass-card {
    background: rgba(230, 224, 243, 0.55);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1px solid rgba(184, 169, 232, 0.35);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(45, 27, 105, 0.08);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s var(--ease-mist), box-shadow 0.3s var(--ease-mist);
    /* Initial state for reveal animation */
    opacity: 0;
    transform: translateY(30px);
    filter: blur(8px);
}

.glass-card.revealed {
    opacity: 1;
    transform: translateY(var(--card-offset, 0px));
    filter: blur(0);
    transition: opacity 0.6s var(--ease-mist),
                transform 0.6s var(--ease-mist),
                filter 0.6s var(--ease-mist),
                box-shadow 0.3s var(--ease-mist);
}

.glass-card.revealed:hover {
    transform: translateY(calc(var(--card-offset, 0px) - 6px));
    box-shadow: 0 16px 48px rgba(45, 27, 105, 0.14);
}

.glass-card.revealed:hover .card-header-strip {
    height: 8px;
}

.card-header-strip {
    width: 100%;
    height: 4px;
    background: var(--alpenglow-rose);
    border-radius: 20px 20px 0 0;
    transition: height 0.3s var(--ease-mist);
}

.card-body {
    padding: 28px 28px 20px;
}

.card-title {
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--dusk-indigo);
    letter-spacing: 0.02em;
    margin-bottom: 10px;
}

.card-desc {
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(0.9rem, 1.4vw, 1rem);
    color: var(--haze-lavender);
    line-height: 1.65;
    margin-bottom: 16px;
}

.card-chevron {
    display: flex;
    justify-content: center;
    color: var(--haze-lavender);
    animation: chevronBounce 2s ease-in-out infinite;
    transition: transform 0.4s var(--ease-mist);
}

.glass-card.expanded .card-chevron {
    transform: rotate(180deg);
}

@keyframes chevronBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(3px); }
}

.glass-card.expanded .card-chevron {
    animation: none;
}

.card-expanded {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s var(--ease-mist), padding 0.4s var(--ease-mist);
    padding: 0 28px;
}

.glass-card.expanded .card-expanded {
    max-height: 300px;
    padding: 0 28px 28px;
}

.card-expanded p {
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(0.85rem, 1.3vw, 0.95rem);
    color: var(--dusk-indigo);
    line-height: 1.8;
    border-top: 1px solid rgba(184, 169, 232, 0.25);
    padding-top: 16px;
}

/* --- Valley Zone --- */
#valley-zone {
    position: relative;
    z-index: 5;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(80px, 10vw, 160px) clamp(20px, 5vw, 40px);
    background: var(--warm-valley);
}

.valley-content {
    max-width: 600px;
    text-align: center;
}

.valley-heading {
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: var(--dusk-indigo);
    letter-spacing: 0.04em;
    margin-bottom: 48px;
    line-height: 1.3;
}

.valley-text {
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    color: var(--dusk-indigo);
    line-height: 2.0;
    margin-bottom: 32px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-mist), transform 0.6s var(--ease-mist);
}

.valley-text.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- Echo Zone (Footer) --- */
#echo-zone {
    position: relative;
    z-index: 5;
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(60px, 8vw, 120px) clamp(20px, 5vw, 40px);
    background: linear-gradient(165deg, #e8a0b4 0%, #b8a9e8 45%, #6c4ab6 100%);
    gap: 40px;
}

.echo-content {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.echo-chip {
    background: rgba(230, 224, 243, 0.55);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1px solid rgba(184, 169, 232, 0.35);
    border-radius: 100px;
    padding: 12px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: background 0.3s var(--ease-mist);
}

.echo-chip:hover {
    background: rgba(230, 224, 243, 0.75);
}

.chip-label {
    font-family: 'Comfortaa', cursive;
    font-weight: 300;
    font-size: clamp(0.65rem, 1vw, 0.75rem);
    letter-spacing: 0.06em;
    text-transform: lowercase;
    color: var(--haze-lavender);
}

.chip-value {
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 600;
    font-size: clamp(0.8rem, 1.2vw, 0.95rem);
    color: var(--dusk-indigo);
}

.echo-whisper {
    font-family: 'Quicksand', sans-serif;
    font-weight: 500;
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: rgba(240, 238, 248, 0.5);
    letter-spacing: 0.08em;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: 1fr;
    }

    .glass-card.revealed {
        transform: translateY(0) !important;
    }

    .glass-card.revealed:hover {
        transform: translateY(-6px) !important;
    }

    #mountain-layers {
        height: 200px;
    }

    .echo-content {
        flex-direction: column;
        align-items: center;
    }

    .halo-ring {
        display: none;
    }

    .gradient-orb {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: clamp(3rem, 15vw, 5rem);
    }

    #nav-pill {
        top: 16px;
        right: 16px;
        padding: 6px 16px;
        gap: 14px;
    }
}