/* ============================================
   AUDIO-SYNCED CONFESSION STORY
   ============================================ */

:root {
    --bg: #050609;
    --panel: rgba(11, 13, 18, 0.72);
    --panel-strong: rgba(13, 15, 21, 0.9);
    --line: rgba(250, 244, 232, 0.13);
    --text: #faf4e8;
    --soft: rgba(250, 244, 232, 0.76);
    --muted: rgba(250, 244, 232, 0.5);
    --gold: #dea368;
    --teal: #9fd0c9;
    --rose: #f19baa;
    --violet: #aaa1e6;
    --danger: #ec6f7f;
    --shadow: rgba(0, 0, 0, 0.44);
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    --font-story: 'Lora', serif;
}

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

html {
    background: var(--bg);
}

body {
    min-height: 100vh;
    min-height: 100dvh;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(159, 208, 201, 0.05), transparent 22%),
        linear-gradient(0deg, rgba(222, 163, 104, 0.05), transparent 26%),
        var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    touch-action: manipulation;
}

button {
    font: inherit;
}

#preloader {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: grid;
    place-items: center;
    gap: 18px;
    background: var(--bg);
    transition: opacity 0.55s ease, visibility 0.55s ease;
}

#preloader.done {
    opacity: 0;
    visibility: hidden;
}

.preloader-mark {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    border: 1px solid rgba(250, 244, 232, 0.18);
    border-radius: 50%;
    color: var(--gold);
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
}

.preloader-line {
    position: relative;
    width: 150px;
    height: 2px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(250, 244, 232, 0.1);
}

.preloader-line::after {
    content: '';
    position: absolute;
    inset: 0;
    width: 42%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--teal), var(--gold), var(--rose));
    animation: loadSlide 0.95s ease-in-out infinite;
}

@keyframes loadSlide {
    from { transform: translateX(-120%); }
    to { transform: translateX(250%); }
}

#bg-canvas,
.ambient {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

#bg-canvas {
    z-index: 0;
}

.ambient {
    z-index: 1;
    opacity: 0.96;
    transition: background 0.7s ease;
}

.ambient.warm {
    background:
        linear-gradient(135deg, rgba(222, 163, 104, 0.16), transparent 36%),
        linear-gradient(315deg, rgba(159, 208, 201, 0.09), transparent 42%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.18), rgba(6, 7, 12, 0.7));
}

.ambient.dawn {
    background:
        linear-gradient(145deg, rgba(159, 208, 201, 0.15), transparent 34%),
        linear-gradient(20deg, rgba(222, 163, 104, 0.1), transparent 40%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.18), rgba(6, 7, 12, 0.72));
}

.ambient.gold {
    background:
        linear-gradient(150deg, rgba(222, 163, 104, 0.18), transparent 38%),
        linear-gradient(22deg, rgba(250, 244, 232, 0.06), transparent 44%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.18), rgba(6, 7, 12, 0.7));
}

.ambient.cold {
    background:
        linear-gradient(145deg, rgba(142, 160, 210, 0.16), transparent 38%),
        linear-gradient(320deg, rgba(159, 208, 201, 0.07), transparent 44%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.26), rgba(6, 7, 12, 0.76));
}

.ambient.night {
    background:
        linear-gradient(150deg, rgba(170, 161, 230, 0.15), transparent 42%),
        linear-gradient(330deg, rgba(111, 128, 158, 0.12), transparent 45%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.32), rgba(6, 7, 12, 0.78));
}

.ambient.violet {
    background:
        linear-gradient(145deg, rgba(170, 161, 230, 0.16), transparent 40%),
        linear-gradient(20deg, rgba(241, 155, 170, 0.09), transparent 43%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.26), rgba(6, 7, 12, 0.76));
}

.ambient.storm {
    background:
        linear-gradient(160deg, rgba(236, 111, 127, 0.17), transparent 38%),
        linear-gradient(20deg, rgba(222, 163, 104, 0.07), transparent 44%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.34), rgba(6, 7, 12, 0.8));
}

.ambient.confess {
    background:
        linear-gradient(180deg, rgba(250, 244, 232, 0.1), transparent 30%),
        linear-gradient(28deg, rgba(222, 163, 104, 0.18), transparent 42%),
        linear-gradient(330deg, rgba(241, 155, 170, 0.1), transparent 45%),
        linear-gradient(180deg, rgba(6, 7, 12, 0.18), rgba(6, 7, 12, 0.7));
}

.story-player {
    position: relative;
    z-index: 5;
    min-height: 100vh;
    min-height: 100dvh;
}

.hidden {
    display: none !important;
}

.intro-screen,
.reader-screen,
.ending-screen {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    overflow: hidden;
}

.intro-screen,
.ending-screen {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: max(18px, env(safe-area-inset-top)) 18px max(22px, env(safe-area-inset-bottom));
}

.intro-content,
.ending-card {
    position: relative;
    z-index: 3;
    width: min(520px, 100%);
    padding: 0 0 0 18px;
    border: 0;
    border-radius: 0;
    background: linear-gradient(90deg, rgba(222, 163, 104, 0.22), transparent 1px) 0 0 / 1px 100% no-repeat;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    animation: screenRise 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.intro-content {
    max-width: 520px;
}

.eyebrow {
    color: var(--gold);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2 {
    color: var(--text);
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 0.98;
}

h1 {
    max-width: 10ch;
    margin-top: 14px;
    font-size: clamp(2.9rem, 15vw, 4.9rem);
}

h2 {
    margin-top: 14px;
    font-size: clamp(2.35rem, 12vw, 4.35rem);
}

.intro-content p,
.ending-card p,
.line-stack p {
    color: var(--soft);
    font-family: var(--font-story);
    font-size: clamp(1.02rem, 4.2vw, 1.18rem);
    line-height: 1.76;
}

.intro-content > p:not(.eyebrow) {
    max-width: 34rem;
    margin-top: 20px;
}

.primary-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: min(100%, 320px);
    min-height: 56px;
    margin-top: 30px;
    padding: 0 24px;
    border: 1px solid rgba(222, 163, 104, 0.46);
    border-radius: 999px;
    background: rgba(222, 163, 104, 0.13);
    color: var(--text);
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.primary-action:hover {
    border-color: rgba(222, 163, 104, 0.76);
    background: rgba(222, 163, 104, 0.2);
    transform: translateY(-2px);
}

.reader-screen {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 12px;
    width: min(480px, calc(100% - 20px));
    margin: 0 auto;
    padding: max(10px, env(safe-area-inset-top)) 0 max(10px, env(safe-area-inset-bottom));
}

.reader-top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
    min-height: 54px;
    padding: 8px 9px 8px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(8, 10, 15, 0.72);
    box-shadow: 0 20px 70px var(--shadow);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.time-track {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr) 38px;
    gap: 7px;
    align-items: center;
}

.time-track span {
    color: var(--muted);
    font-size: 0.76rem;
    font-weight: 800;
    text-align: center;
}

.time-track div {
    height: 5px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(250, 244, 232, 0.09);
    box-shadow: inset 0 0 0 1px rgba(250, 244, 232, 0.035);
}

.time-track i {
    display: block;
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--teal), var(--gold), var(--rose));
    box-shadow: 0 0 18px rgba(222, 163, 104, 0.24);
}

.music-toggle {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(250, 244, 232, 0.14);
    border-radius: 50%;
    background: rgba(250, 244, 232, 0.05);
    color: var(--soft);
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.music-toggle:hover,
.music-toggle.playing {
    border-color: rgba(222, 163, 104, 0.52);
    color: var(--gold);
    transform: translateY(-1px);
}

.reader-stage {
    position: relative;
    display: grid;
    place-items: center;
    min-height: calc(100dvh - 96px);
    border: 1px solid rgba(250, 244, 232, 0.08);
    border-radius: 28px;
    padding: clamp(22px, 7vw, 34px);
    background:
        linear-gradient(180deg, rgba(250, 244, 232, 0.07), transparent 20%),
        linear-gradient(0deg, rgba(222, 163, 104, 0.075), transparent 34%),
        rgba(9, 11, 16, 0.5);
    box-shadow: 0 28px 90px var(--shadow);
    overflow: hidden;
}

.reader-stage::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        linear-gradient(180deg, rgba(250, 244, 232, 0.055), transparent 18%),
        linear-gradient(0deg, rgba(5, 6, 9, 0.34), transparent 30%);
    pointer-events: none;
}

.reader-stage::after {
    content: '';
    position: absolute;
    left: 24px;
    top: 24px;
    bottom: 24px;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(222, 163, 104, 0.48), rgba(159, 208, 201, 0.26), transparent);
    opacity: 0.72;
    pointer-events: none;
}

.chapter-card {
    position: relative;
    z-index: 1;
    display: grid;
    align-content: center;
    width: 100%;
    min-height: calc(100dvh - 190px);
    padding-left: 18px;
}

#chapter-title {
    max-width: 10ch;
    margin-top: 0;
    color: var(--text);
    font-family: var(--font-display);
    font-size: clamp(2.35rem, 12vw, 4.15rem);
    font-weight: 700;
    line-height: 0.98;
}

.line-stack {
    display: flex;
    min-height: min(46dvh, 390px);
    margin-top: 30px;
    flex-direction: column;
    justify-content: center;
    gap: 16px;
}

.line-stack p {
    opacity: 0;
    transform: translateY(16px);
    color: rgba(250, 244, 232, 0.68);
    text-wrap: pretty;
}

.line-stack p.visible {
    animation: lineReveal 0.9s cubic-bezier(0.18, 0.88, 0.24, 1) var(--delay, 0ms) both;
}

.line-stack p:last-child {
    color: var(--text);
}

.ending-card {
    max-height: calc(100dvh - 42px);
    overflow-y: auto;
    padding-right: 8px;
    padding-left: 18px;
    scrollbar-width: none;
}

.ending-card::-webkit-scrollbar {
    display: none;
}

.ending-card h2 {
    font-size: clamp(2.15rem, 10.8vw, 4.2rem);
}

.ending-card p + p {
    margin-top: 16px;
}

.confession-box {
    display: grid;
    gap: 12px;
    margin: 28px 0;
    padding: 20px 0 20px 18px;
    border: 0;
    border-left: 1px solid rgba(222, 163, 104, 0.52);
    border-radius: 0;
    background: transparent;
    animation: confessionReveal 0.8s ease 0.25s both;
}

.confession-box span {
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 800;
    text-transform: uppercase;
}

.confession-box strong {
    color: var(--text);
    font-family: var(--font-display);
    font-size: clamp(2.1rem, 10.8vw, 4.6rem);
    font-weight: 700;
    line-height: 0.98;
}

.ending-note {
    color: var(--text) !important;
}

.particle {
    position: fixed;
    z-index: 50;
    border-radius: 50%;
    pointer-events: none;
}

.title-enter {
    animation: titleReveal 0.72s cubic-bezier(0.18, 0.88, 0.24, 1) both;
}

@keyframes screenRise {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes titleReveal {
    from {
        opacity: 0;
        transform: translateY(18px);
        filter: blur(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes lineReveal {
    from {
        opacity: 0;
        transform: translateY(14px);
        filter: blur(7px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes confessionReveal {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (min-width: 760px) {
    .intro-screen,
    .ending-screen {
        align-items: center;
        padding: 34px;
    }

    .intro-content,
    .ending-card {
        width: min(680px, 100%);
        padding-left: 24px;
    }

    h1 {
        max-width: 11ch;
        font-size: clamp(4.6rem, 9vw, 6.8rem);
    }

    .reader-screen {
        width: min(560px, calc(100% - 36px));
        padding: 18px 0;
    }

    .reader-stage {
        min-height: calc(100dvh - 102px);
        padding: 34px;
    }

}

@media (max-height: 780px) {
    .intro-screen,
    .ending-screen {
        padding: 14px 18px 18px;
    }

    h1 {
        font-size: clamp(2.42rem, 12.5vw, 3.45rem);
    }

    .intro-content p,
    .ending-card p,
    .line-stack p {
        line-height: 1.62;
    }

    .primary-action {
        min-height: 52px;
        margin-top: 22px;
    }

    #chapter-title {
        font-size: clamp(2rem, 10vw, 3.15rem);
    }

    .line-stack {
        min-height: min(42dvh, 310px);
        margin-top: 22px;
    }

    .line-stack p {
        line-height: 1.58;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}