/* ==========================================================================
   PREMIUM CINEMATIC INTERACTIVE ROMANTIC WEBSITE - STYLESHEET
   ========================================================================== */

/* --- CSS Variables & Design Tokens --- */
:root {
    --bg-dark: #030206;
    --bg-radial: radial-gradient(circle at 50% 50%, #15091a 0%, #030206 100%);

    --color-pink-main: #ff3366;
    --color-pink-soft: #ff6699;
    --color-pink-glow: rgba(255, 51, 102, 0.6);
    --color-gold-glow: rgba(255, 215, 0, 0.3);

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.75);
    --text-muted: rgba(255, 255, 255, 0.45);

    --font-heading: 'Cinzel', 'Cormorant Garamond', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --font-romantic: 'Cormorant Garamond', serif;

    --glass-bg: rgba(18, 12, 24, 0.45);
    --glass-border: rgba(255, 102, 153, 0.18);
    --glass-border-hover: rgba(255, 102, 153, 0.45);
    --glass-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(255, 51, 102, 0.15);

    --ease-cinematic: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-out-smooth: cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Reset & Base Layout --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* --- Canvas & Background Layers --- */
#bg-canvas, #heart-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    display: block;
    pointer-events: none;
}

#heart-canvas {
    pointer-events: auto;
    z-index: 10;
}

#bg-canvas {
    z-index: 1;
}

.cinematic-vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    background: radial-gradient(circle at center, transparent 40%, rgba(0, 0, 0, 0.8) 100%);
}

.ambient-glow {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60vw;
    height: 60vw;
    max-width: 700px;
    max-height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 51, 102, 0.12) 0%, rgba(255, 102, 153, 0.03) 45%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
    z-index: 2;
    opacity: 0.7;
    transition: opacity 2s var(--ease-cinematic), transform 2s var(--ease-cinematic);
}

.ambient-glow.active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2);
}

/* --- App Container & Screen Transitions --- */
#app-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    z-index: 5;
    display: flex;
    justify-content: center;
    align-items: center;
}

.screen {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.96);
    transition: opacity 1.2s var(--ease-cinematic), transform 1.2s var(--ease-cinematic), visibility 1.2s;
    pointer-events: none;
}

.screen.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    pointer-events: auto;
}

/* --- Glassmorphism Card Style --- */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 3.5rem 3rem;
    box-shadow: var(--glass-shadow);
    text-align: center;
    max-width: 480px;
    width: 90%;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: border-color 0.5s ease, box-shadow 0.5s ease;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

/* --- Buttons --- */
.btn {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 102, 153, 0.3);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    padding: 1.1rem 3rem;
    border-radius: 50px;
    cursor: pointer;
    outline: none;
    overflow: hidden;
    transition: all 0.4s var(--ease-out-smooth);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.15);
}

.btn .btn-text {
    position: relative;
    z-index: 3;
    transition: color 0.3s ease;
}

.btn .btn-glow {
    position: absolute;
    inset: -2px;
    border-radius: 50px;
    background: linear-gradient(90deg, #ff3366, #ff6699, #ff3366);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
    filter: blur(8px);
}

.btn:hover {
    transform: translateY(-2px) scale(1.03);
    border-color: rgba(255, 102, 153, 0.8);
    box-shadow: 0 0 35px rgba(255, 51, 102, 0.4), inset 0 0 15px rgba(255, 102, 153, 0.2);
}

.btn:hover .btn-glow {
    opacity: 0.6;
}

.btn:active {
    transform: translateY(1px) scale(0.98);
}

/* Ripple Click Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple-anim 0.75s linear;
    pointer-events: none;
    z-index: 2;
}

@keyframes ripple-anim {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* --- Welcome Screen --- */
.subtitle {
    font-family: var(--font-romantic);
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

/* --- Loading Screen --- */
.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 1.8rem;
    width: 90%;
    max-width: 420px;
}

.loading-subtitle {
    font-family: var(--font-romantic);
    font-size: 1.5rem;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    min-height: 2rem;
    transition: opacity 0.4s ease;
}

.percentage-container {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #ffffff;
    text-shadow: 0 0 25px rgba(255, 51, 102, 0.6), 0 0 50px rgba(255, 51, 102, 0.2);
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.percent-symbol {
    font-size: 2rem;
    margin-left: 0.2rem;
    color: var(--color-pink-soft);
    font-weight: 300;
}

.progress-bar-container {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.5);
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #ff3366, #ff6699, #ffffff);
    border-radius: 10px;
    box-shadow: 0 0 12px #ff3366, 0 0 24px #ff6699;
    transition: width 0.15s ease-out;
}

.loading-status {
    font-size: 0.95rem;
    color: var(--color-pink-soft);
    font-family: var(--font-body);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    min-height: 1.5rem;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.loading-status.visible {
    opacity: 1;
}

/* --- Start Screen --- */
.start-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: #ffffff;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.btn-start {
    padding: 1.2rem 3.5rem;
    font-size: 1.2rem;
    letter-spacing: 0.3em;
    animation: btn-pulse 3s infinite ease-in-out;
}

@keyframes btn-pulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 51, 102, 0.2), inset 0 0 10px rgba(255, 51, 102, 0.1);
        border-color: rgba(255, 102, 153, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(255, 51, 102, 0.6), inset 0 0 20px rgba(255, 102, 153, 0.3);
        border-color: rgba(255, 102, 153, 0.8);
    }
}

/* --- Main Screen Text Reveal Overlay --- */
.text-reveal-container {
    position: absolute;
    bottom: 8%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    width: 90%;
    max-width: 650px;
    z-index: 20;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, 30px);
    transition: opacity 2s var(--ease-cinematic), transform 2s var(--ease-cinematic);
}

.text-reveal-container.visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

.final-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: #ffffff;
    text-shadow: 0 0 20px rgba(255, 51, 102, 0.7), 0 0 40px rgba(255, 102, 153, 0.3);
    margin-bottom: 0.8rem;
}

.final-message {
    font-family: var(--font-romantic);
    font-size: 1.4rem;
    font-style: italic;
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

/* --- Audio Control Toggle --- */
.audio-btn {
    position: fixed;
    top: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(18, 12, 24, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 102, 153, 0.25);
    color: #ffffff;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    outline: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    opacity: 1;
    visibility: visible;
}

.audio-btn.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.audio-btn:hover {
    transform: scale(1.1);
    border-color: rgba(255, 102, 153, 0.6);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.3);
}

.audio-pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(255, 51, 102, 0.5);
    animation: audio-ring 2s infinite ease-out;
    opacity: 0;
    pointer-events: none;
}

.audio-btn.playing .audio-pulse {
    opacity: 1;
}

@keyframes audio-ring {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.6);
        opacity: 0;
    }
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .glass-card {
        padding: 2.5rem 1.8rem;
        border-radius: 20px;
        gap: 1.5rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .btn {
        padding: 1rem 2.2rem;
        font-size: 1rem;
        letter-spacing: 0.2em;
    }

    .percentage-container {
        font-size: 3.2rem;
    }

    .start-title {
        font-size: 1.8rem;
    }

    .final-title {
        font-size: 1.6rem;
    }

    .final-message {
        font-size: 1.15rem;
    }

    .text-reveal-container {
        bottom: 8%;
    }

    .audio-btn {
        top: 1.2rem;
        right: 1.2rem;
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }
}

@media (max-width: 380px) {
    .glass-card {
        padding: 2rem 1.2rem;
    }

    .start-title, .final-title {
        font-size: 1.4rem;
    }
}