:root {
    --bg-grad-start: #f8ffae;
    --bg-grad-end: #43c6ac;
    --primary-color: #43c6ac;
    --secondary-color: #f8ffae;
    --text-color: #333;
    --love-color: #ff7e9f;
    --white-color: #fff;
    --dark-bg: #1a1a1a;
    --glitch-green: #00ff41;
    --glitch-magenta: #ff00c1;
    --glitch-cyan: #00fff9;
}

body {
    background: linear-gradient(135deg, var(--bg-grad-start) 0%, var(--bg-grad-end) 100%);
    font-family: 'Segoe UI', sans-serif;
    min-height: 100vh;
    margin: 0;
    overflow: hidden;
    /* Menengahkan kartu */
    display: flex;
    align-items: flex-start; /* Rata atas */
    justify-content: center;
}
/* --- Fake 404 Screen --- */
.fake-404-screen {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: var(--dark-bg);
    color: var(--glitch-green);
    font-family: 'Courier New', Courier, monospace;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    z-index: 1001;
    transition: opacity 1s ease-out;
}
.error-content h1 {
    font-size: 10rem;
    font-weight: bold;
    margin: 0;
    text-shadow: 0 0 10px var(--glitch-green), 0 0 20px var(--glitch-green);
}
.error-content .glitch {
    position: relative;
    font-size: 1.5rem;
    margin-bottom: 2rem;
}
.glitch span {
    position: relative;
    z-index: 1;
}
.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%; 
    background: var(--dark-bg);
    overflow: hidden;
}
.glitch::before {
    left: 2px;
    text-shadow: -2px 0 var(--glitch-magenta);
    animation: glitch-anim-1 2s infinite linear alternate-reverse;
}
.glitch::after {
    left: -2px;
    text-shadow: -2px 0 var(--glitch-cyan), 2px 2px var(--glitch-magenta);
    animation: glitch-anim-2 2s infinite linear alternate-reverse;
}
@keyframes glitch-anim-1 { 0% { clip-path: inset(5% 0 90% 0); } 100% { clip-path: inset(80% 0 5% 0); } }
@keyframes glitch-anim-2 { 0% { clip-path: inset(95% 0 2% 0); } 100% { clip-path: inset(10% 0 85% 0); } }

.error-content button {
    background: transparent;
    border: 2px solid var(--glitch-green);
    color: var(--glitch-green);
    padding: 10px 20px;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
}
.error-content button:hover { background: var(--glitch-green); color: var(--dark-bg); }

/* --- Layar Unggah Foto --- */
.photo-upload-screen {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: rgba(255,255,255,0.95);
    display: none; /* Sembunyikan di awal */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    text-align: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}
.upload-content h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 12px;
}
.upload-content p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 24px;
    max-width: 400px;
}
.upload-content .upload-btn,
.upload-content button {
    background: var(--primary-color);
    color: var(--white-color);
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    display: inline-block;
    margin: 0.5rem;
    transition: background 0.2s, color 0.2s;
}
.upload-content .upload-btn:hover,
.upload-content button:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}
.arrow-animation {
    width: 60px; height: 60px;
    border-top: 5px solid var(--primary-color);
    border-right: 5px solid var(--primary-color);
    margin: 0 auto 1rem;
    transform: rotate(-45deg);
    animation: arrow-move 1.5s infinite ease-in-out;
}
@keyframes arrow-move {
    0% { transform: translateY(10px) translateX(10px) rotate(-45deg); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateY(-10px) translateX(-10px) rotate(-45deg); opacity: 0; }
}

/* --- Layar Mystery Box --- */
.mystery-box-screen {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: var(--bg-grad-start);
    display: none; /* Sembunyikan di awal */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    text-align: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}
.mystery-content h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 12px;
}
.mystery-content p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 24px;
}
.box-container {
    position: relative;
    margin-top: 2rem;
    perspective: 1000px; /* Diperlukan untuk efek 3D */
}
.mystery-box {
    width: 150px;
    height: 150px;
    background: #8B4513; /* Warna kayu */
    border: 5px solid #5C2E00;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transform-style: preserve-3d; /* Penting untuk 3D */
    transition: transform 1s ease-in-out;
}
/* Membuat tutup kotak */
.mystery-box::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    width: 100%;
    height: 100%;
    background: #A0522D; /* Warna kayu sedikit lebih terang */
    border: 5px solid #5C2E00;
    border-radius: 10px;
    transform-origin: bottom;
    transition: transform 1s cubic-bezier(0.23, 1, 0.32, 1);
}
.mystery-box.open {
    transform: translateY(20px) rotateX(-10deg);
    transition-delay: 1s; /* Beri jeda sebelum kotak bergerak */
}
.mystery-box.open::before {
    transform: rotateX(120deg) translateZ(20px) translateY(-20px);
}
.keyhole {
    width: 20px;
    height: 20px;
    background: #333;
    border-radius: 50%;
    position: relative;
    z-index: 2; /* Pastikan di atas tutup */
}
.keyhole::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 25px;
    background: #333;
    top: 15px;
    left: 7px;
}
.keys-container {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}
.key {
    width: 50px;
    height: 50px;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.5s ease;
}
.key svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(2px 2px 3px rgba(0,0,0,0.3));
}
.key:hover {
    transform: scale(1.1);
}
.key.wrong {
    animation: card-shake 0.4s; /* Gunakan animasi getar yang sudah ada */
    opacity: 0.6;
    cursor: not-allowed;
}

.splash {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: rgba(255,255,255,0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.8s ease-in-out;
}
.splash .icon-envelope {
    width: 120px;
    height: 120px;
    margin-bottom: 24px;
}
.splash h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 12px;
}
.splash p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 24px;
    text-align: center;
    padding: 0 1rem;
}
.splash button {
    background: var(--primary-color);
    color: var(--white-color);
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(67, 198, 172, 0.15);
    transition: background 0.2s, color 0.2s;
}
.splash button:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}
/* --- Animasi Jejak Kaki --- */
.paw-prints-container {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    overflow: hidden;
}
.paw-print {
    position: absolute;
    width: 40px;
    height: 40px;
    opacity: 0;
    animation: walk-and-fade 1.5s ease-in-out forwards;
}
.paw-print svg {
    width: 100%;
    height: 100%;
    fill: var(--primary-color);
    opacity: 0.6;
}
@keyframes walk-and-fade {
    0% { opacity: 0; transform: scale(0.5); }
    25% { opacity: 1; transform: scale(1); }
    75% { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(1.2); }
}
.card {
    background: var(--white-color);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    padding: 32px 24px;
    margin-top: 60px;
    text-align: center;
    max-width: 400px;
    width: 90%; /* Gunakan persentase agar responsif */
    position: relative;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    display: none; /* Sembunyikan di awal */
}
.card.show {
    opacity: 1;
    display: block; /* Tampilkan saat class ditambahkan */
}
/* --- Efek Hati Ajaib --- */
.magic-love-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}
.magic-love {
    position: absolute;
    width: 35px;
    height: 35px;
    opacity: 1;
    /* Mengganti offset-path dengan transform untuk responsivitas */
    animation: magic-love-orbit 6s ease-in-out forwards;
}
.magic-love svg {
    width: 100%;
    height: 100%;
    fill: var(--love-color); /* Warna pink mawar */
    filter: drop-shadow(0 0 8px var(--love-color));
    animation: spin-and-pulse 1.5s infinite ease-in-out;
}
@keyframes magic-love-orbit {
    from { transform: rotate(0deg) translateX(180px) rotate(0deg) scale(0.8); opacity: 1; }
    to   { transform: rotate(360deg) translateX(180px) rotate(-360deg) scale(1.2); opacity: 0; }
}
@keyframes spin-and-pulse {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
}
/* Animasi getar untuk kartu */
@keyframes card-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px) rotate(-1deg); }
    75% { transform: translateX(5px) rotate(1deg); }
}
.card img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 16px;
    border: 4px solid var(--primary-color);
    transition: box-shadow 0.5s ease-in-out; /* Transisi untuk glow */
}
.card img.glow {
    box-shadow: 0 0 15px 5px rgba(67, 198, 172, 0.7), 0 0 25px 10px rgba(248, 255, 174, 0.5);
}
.card h1 {
    font-size: 2rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}
/* Animasi putar untuk judul */
@keyframes text-spin {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}
.card p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 24px;
}
/* Kursor untuk efek mengetik */
.card p .cursor {
    display: inline-block;
    background-color: var(--text-color);
    margin-left: 2px;
    width: 3px;
    animation: blink 1s infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; } 50% { opacity: 0; }
}
.btn-surprise {
    background: var(--primary-color);
    color: var(--white-color);
    border: none;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.1s;
}
.btn-surprise:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}
.btn-surprise:disabled {
    background-color: #b0d9d1;
    color: #f0f0f0;
    cursor: not-allowed;
}
/* Pesan Kejutan (Pengganti Alert) */
.surprise-message {
    position: absolute;
    bottom: -100px; /* Mulai dari bawah kartu */
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--white-color);
    padding: 10px 20px;
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    white-space: nowrap;
    z-index: 10;
}
.surprise-message.show {
    opacity: 1;
    bottom: 20px; /* Muncul ke atas */
}
.confetti, .balloon, .sparkle-container, .love-container {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    pointer-events: none;
    z-index: 9999;
}
.confetti-piece {
    position: absolute;
    width: 12px; height: 12px;
    border-radius: 50%;
    opacity: 0; /* Mulai dengan transparan */
    animation: confetti-fall 4s linear forwards;
}
/* Animasi confetti yang lebih realistis */
@keyframes confetti-fall {
    0% {
        transform: translateY(-20vh) rotateZ(0deg) rotateY(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(120vh) rotateZ(720deg) rotateY(1080deg);
        opacity: 0;
    }
}
.balloon-piece {
    position: absolute;
    width: 32px; height: 48px;
    border-radius: 16px 16px 16px 16px / 24px 24px 24px 24px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    opacity: 0; /* Mulai dari transparan */
    animation: balloonUp 5s ease-in-out forwards; /* Perpanjang durasi dan ganti timing */
}
/* Animasi balon yang lebih natural dengan goyangan */
@keyframes balloonUp {
    0% { transform: translateY(110vh) translateX(0) rotate(0deg); opacity: 1; }
    20% { transform: translateY(80vh) translateX(15px) rotate(5deg); }
    40% { transform: translateY(60vh) translateX(-15px) rotate(-5deg); }
    60% { transform: translateY(40vh) translateX(10px) rotate(3deg); }
    80% { transform: translateY(20vh) translateX(-10px) rotate(-3deg); }
    100% { transform: translateY(-20vh) translateX(0) rotate(0deg); opacity: 0; }
}
.sparkle-piece {
    position: absolute;
    width: 15px; height: 15px;
    opacity: 0;
    animation: sparkle-fade 1.5s ease-in-out forwards;
}
@keyframes sparkle-fade {
    0% { transform: scale(0.5); opacity: 1; }
    100% { transform: scale(1.5) opacity: 0; }
}
/* Hati (Love) */
.love-piece {
    position: absolute;
    width: 30px;
    height: 30px;
    opacity: 0;
    animation: love-float 5s ease-in forwards;
}
.love-piece svg {
    width: 100%;
    height: 100%;
    fill: var(--love-color); /* Samakan warna dengan hati lainnya */
    filter: drop-shadow(0 0 5px var(--love-color));
}
@keyframes love-float {
    0% { transform: translateY(100vh) scale(0.8); opacity: 1; }
    100% { transform: translateY(-20vh) scale(1.2); opacity: 0; }
}

/* Animasi intro untuk love & rose */
@keyframes fly-from-top-left {
    0% { transform: translate(-10vw, -10vh) rotate(-30deg); opacity: 0; }
    20%, 80% { opacity: 1; }
    100% { transform: translate(110vw, 110vh) rotate(360deg); opacity: 0; }
}
@keyframes fly-from-top-right {
    0% { transform: translate(110vw, -10vh) rotate(30deg); opacity: 0; }
    20%, 80% { opacity: 1; }
    100% { transform: translate(-10vw, 110vh) rotate(360deg); opacity: 0; }
}
@keyframes fly-from-bottom-left {
    0% { transform: translate(-10vw, 110vh) rotate(30deg); opacity: 0; }
    20%, 80% { opacity: 1; }
    100% { transform: translate(110vw, -10vh) rotate(360deg); opacity: 0; }
}
@keyframes fly-from-bottom-right {
    0% { transform: translate(110vw, 110vh) rotate(-30deg); opacity: 0; }
    20%, 80% { opacity: 1; }
    100% { transform: translate(-10vw, -10vh) rotate(360deg); opacity: 0; }
}

/* --- Layar Penutup (Finale) --- */
.finale-screen {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1.5s ease-in-out;
}
.finale-screen.visible {
    opacity: 1;
    pointer-events: auto;
}
.finale-content {
    text-align: center;
    transform: scale(0.8);
    opacity: 0;
    animation: finale-fade-in 1s ease-out 2.5s forwards; /* Tambah delay agar mawar selesai animasi */
}
@keyframes finale-fade-in {
    to { transform: scale(1); opacity: 1; }
}
.finale-icon {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto 2rem;
    animation: finale-pulse 2.5s infinite ease-in-out; /* Pindahkan animasi ke sini */
}
.finale-icon svg {
    position: absolute;
    left: 0; top: 0;
    width: 100%; height: 100%;
}
.finale-icon .finale-heart { fill: var(--love-color); }
.finale-icon .finale-flower {
    fill: var(--secondary-color);
    transform: scale(0.6);
    filter: drop-shadow(0 0 10px #ffc371);
    animation-delay: -1.25s; /* Agar animasinya tidak sinkron */
}
@keyframes finale-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}
/* -- Perbaikan Animasi Mawar ke Tengah -- */
@keyframes rose-to-center-from-top {
    0% { transform: translate(calc(50vw - 15px), -10vh) scale(0.5); opacity: 1; }
    100% { transform: translate(calc(50vw - 15px), calc(50vh - 100px)) scale(1); opacity: 0; }
}
@keyframes rose-to-center-from-bottom {
    0% { transform: translate(calc(50vw - 15px), 110vh) scale(0.5); opacity: 1; }
    100% { transform: translate(calc(50vw - 15px), calc(50vh - 100px)) scale(1); opacity: 0; }
}
@keyframes rose-to-center-from-left {
    0% { transform: translate(-10vw, calc(50vh - 15px)) scale(0.5); opacity: 1; }
    100% { transform: translate(calc(50vw - 100px), calc(50vh - 15px)) scale(1); opacity: 0; }
}
@keyframes rose-to-center-from-right {
    0% { transform: translate(110vw, calc(50vh - 15px)) scale(0.5); opacity: 1; }
    100% { transform: translate(calc(50vw + 70px), calc(50vh - 15px)) scale(1); opacity: 0; }
}

/* --- Polished visual system --- */
:root {
    --ink: #102a43;
    --muted: #627d98;
    --cream: #fffaf4;
    --accent: #d66b58;
    --accent-dark: #ad493c;
    --line: rgba(16, 42, 67, .12);
}

* { box-sizing: border-box; }
body {
    background: radial-gradient(circle at 15% 10%, #fff5dd 0, transparent 32%),
        linear-gradient(135deg, #f5e8d4 0%, #d7e6e3 100%);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    align-items: center;
    overflow-x: hidden;
}

.eyebrow, .card-label, .surprise-kicker {
    display: block;
    color: var(--accent);
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .18em;
}
.mystery-content .eyebrow, .card-topline, .card-label { font-family: 'Courier New', monospace; letter-spacing: .12em; }
.mystery-content .eyebrow::after { content: ' ▮'; animation: terminal-cursor 1s steps(2) infinite; }
@keyframes terminal-cursor { 50% { opacity: 0; } }
.upload-content, .mystery-content { max-width: 470px; padding: 2rem; }
.upload-content h2, .mystery-content h2, .splash h2 {
    color: var(--ink); font-size: clamp(2rem, 5vw, 3.1rem); letter-spacing: -.05em;
    line-height: 1.05; margin: 1rem 0;
}
.upload-content p, .mystery-content p, .splash p { color: var(--muted); line-height: 1.75; }
.photo-upload-screen, .splash {
    background: rgba(255, 250, 244, .92);
    backdrop-filter: blur(18px);
}
.upload-content .upload-btn, .upload-content button, .splash button {
    background: var(--ink); border-radius: 999px; padding: 14px 24px; font-weight: 700;
    box-shadow: 0 12px 28px rgba(16,42,67,.16);
}
.upload-content .upload-btn:hover, .upload-content button:hover, .splash button:hover { background: var(--accent); color: #fff; }
.arrow-animation { border-color: var(--accent); }
.mystery-box-screen { background: radial-gradient(circle at 50% 30%, #fff3da, #eadfd0 75%); }
.mystery-box { background: linear-gradient(145deg, #c7785d, #8e403b); border-color: #733332; box-shadow: 0 24px 45px rgba(115,51,50,.24); }
.mystery-box::before { background: linear-gradient(145deg, #df9470, #aa5147); border-color: #733332; }
.keys-container { gap: 1.4rem; }
.key { padding: 8px; border-radius: 50%; background: rgba(255,255,255,.52); }

.card {
    background: rgba(255,250,244,.95); border: 1px solid rgba(255,255,255,.8); border-radius: 28px;
    box-shadow: 0 24px 70px rgba(16,42,67,.15); padding: 42px 34px 34px; max-width: 460px;
}
.card::before { content: ''; position: absolute; inset: 10px; border: 1px solid var(--line); border-radius: 20px; pointer-events: none; }
.card img { width: 138px; height: 138px; border: 6px solid var(--cream); outline: 1px solid var(--accent); box-shadow: 0 12px 28px rgba(16,42,67,.16); }
.card-label { margin: 4px 0 14px; }
.card h1 { color: var(--ink); font-family: Georgia, 'Times New Roman', serif; font-size: clamp(2.25rem, 8vw, 3.2rem); line-height: .98; letter-spacing: -.06em; }
.card p { color: var(--muted); font-size: 1rem; line-height: 1.8; }
.btn-surprise { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; background: var(--accent); border-radius: 999px; padding: 15px 20px 15px 24px; font-weight: 800; box-shadow: 0 12px 24px rgba(214,107,88,.25); }
.btn-surprise span:last-child { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: rgba(255,255,255,.2); font-size: 1.1rem; }
.btn-surprise:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); }
.surprise-message { bottom: -110px; background: var(--ink); border-radius: 18px; padding: 18px 22px; white-space: normal; width: min(330px, 85vw); }
.surprise-message.show { bottom: 22px; }
.surprise-message p { color: #fff; margin: 5px 0 0; font-size: .92rem; line-height: 1.5; }
.surprise-kicker { color: #f6c2a7; font-size: .58rem; }
.finale-screen { background: rgba(16,42,67,.94); color: #fff; backdrop-filter: blur(18px); }
.finale-title { font-family: Georgia, serif; font-size: clamp(2.5rem, 9vw, 4.5rem); letter-spacing: -.06em; }
.finale-text { color: rgba(255,255,255,.72); }

@media (max-width: 520px) {
    .card { margin: 18px 0; padding: 34px 24px 28px; }
    .card img { width: 112px; height: 112px; }
    .upload-content, .mystery-content { padding: 1.5rem; }
}

/* --- Pro max: cinematic keepsake layer --- */
main { position: relative; width: 100%; min-height: 100vh; display: grid; place-items: center; isolation: isolate; }
main::before { content: ''; position: fixed; inset: 0; z-index: -3; opacity: .22; pointer-events: none; background-image: radial-gradient(rgba(16,42,67,.22) .7px, transparent .7px); background-size: 18px 18px; mask-image: linear-gradient(to bottom, #000, transparent 90%); }
.ambient { position: fixed; width: 32rem; height: 32rem; border-radius: 50%; filter: blur(80px); opacity: .25; z-index: -2; pointer-events: none; }
.ambient-one { background: #f1a488; top: -14rem; right: -8rem; }
.ambient-two { background: #7dbdb7; bottom: -16rem; left: -8rem; }
.card { overflow: visible; transform-style: preserve-3d; transition: opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1), box-shadow .5s ease; }
.card.show { animation: card-arrive 1s cubic-bezier(.2,.8,.2,1) both; }
@keyframes card-arrive { from { transform: translateY(28px) scale(.96) rotateX(2deg); opacity: 0; } to { transform: translateY(0) scale(1) rotateX(0); opacity: 1; } }
.card::after { content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; background: linear-gradient(125deg, rgba(255,255,255,.65), transparent 28%, transparent 70%, rgba(214,107,88,.08)); }
.card-topline { display: flex; align-items: center; gap: 10px; margin-bottom: 25px; color: #91a2b2; font-size: .57rem; font-weight: 800; letter-spacing: .16em; }
.card-topline span:first-child { display: grid; place-items: center; width: 23px; height: 23px; border: 1px solid rgba(214,107,88,.6); border-radius: 50%; color: var(--accent); font-size: .65rem; }
.topline-rule { height: 1px; flex: 1; background: var(--line); }
.card-divider { position: relative; display: flex; align-items: center; gap: 14px; width: 70%; margin: 20px auto 14px; color: var(--accent); font-size: .9rem; }
.card-divider::before, .card-divider::after { content: ''; height: 1px; flex: 1; background: linear-gradient(90deg, transparent, rgba(214,107,88,.4)); }
.card-divider::after { transform: rotate(180deg); }
.card p { margin-top: 0; }
.signature { margin: 17px 0 25px; color: #91a2b2; font-family: Georgia, serif; font-size: .98rem; font-style: italic; }
.signature span { color: var(--accent); font-size: 1.25rem; margin-left: 4px; }
.btn-surprise { position: relative; z-index: 2; }
.finale-screen::before { content: ''; position: absolute; width: 55vw; height: 55vw; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; box-shadow: 0 0 0 5vw rgba(255,255,255,.025), 0 0 0 10vw rgba(255,255,255,.018); }
.finale-content { position: relative; z-index: 2; }
.finale-icon { filter: drop-shadow(0 0 30px rgba(214,107,88,.5)); }
.finale-icon .finale-heart { fill: #e98b76; }
.finale-content::after { content: '@ Copy Rig · 2026'; display: block; margin-top: 34px; color: rgba(255,255,255,.35); font-size: .6rem; font-weight: 700; letter-spacing: .24em; }
.fake-404-screen { background: radial-gradient(circle at 50% 50%, #163e54, #08151e 75%); }
.error-content button { border-radius: 999px; padding: 13px 24px; font-weight: 700; }
.system-graph { position: relative; width: min(370px, 78vw); height: 105px; margin: 0 auto 26px; padding: 11px 12px 9px; border: 1px solid rgba(0,255,65,.38); background: rgba(0,0,0,.35); overflow: hidden; text-align: left; box-shadow: 0 0 20px rgba(0,255,65,.08), inset 0 0 20px rgba(0,255,65,.05); }
.graph-label { position: relative; z-index: 2; color: rgba(0,255,65,.7); font: 9px 'Courier New', monospace; letter-spacing: .13em; }
.graph-grid { position: absolute; inset: 28px 0 0; opacity: .25; background-image: linear-gradient(rgba(0,255,65,.35) 1px, transparent 1px), linear-gradient(90deg, rgba(0,255,65,.35) 1px, transparent 1px); background-size: 24px 19px; }
.graph-bars { position: absolute; right: 12px; bottom: 9px; left: 12px; height: 62px; display: flex; align-items: end; gap: 4px; }
.graph-bars i { display: block; width: 100%; height: 30%; background: #00ff41; box-shadow: 0 0 7px #00ff41; animation: graph-pulse 1.3s ease-in-out infinite alternate; transform-origin: bottom; }
.graph-bars i:nth-child(2n) { animation-delay: -.3s; }.graph-bars i:nth-child(3n) { animation-delay: -.7s; }.graph-bars i:nth-child(4n) { animation-delay: -1s; }
@keyframes graph-pulse { 0% { height: 12%; opacity: .45; } 35% { height: 72%; opacity: .9; } 70% { height: 35%; opacity: .6; } 100% { height: 92%; opacity: 1; } }
.graph-line { position: absolute; z-index: 2; left: -20%; bottom: 26px; width: 140%; height: 20px; border-top: 1px solid #00fff9; opacity: .85; transform: skewY(-12deg) rotate(-1deg); animation: graph-sweep 2.2s linear infinite; filter: drop-shadow(0 0 4px #00fff9); }
@keyframes graph-sweep { 0% { transform: translateX(-15%) skewY(-12deg) rotate(-1deg); } 50% { transform: translateX(7%) skewY(13deg) rotate(1deg); } 100% { transform: translateX(15%) skewY(-12deg) rotate(-1deg); } }
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}

/* --- Central hacker HUD --- */
.hacker-core { position: fixed; inset: 8vh 7vw; z-index: -1; border: 1px solid rgba(16,42,67,.16); opacity: .72; pointer-events: none; overflow: hidden; }
.hacker-core::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 49.9%, rgba(16,42,67,.08) 50%, transparent 50.1%), linear-gradient(0deg, transparent 49.9%, rgba(16,42,67,.08) 50%, transparent 50.1%); }
.hacker-core::after { content: ''; position: absolute; inset: 0; background: repeating-linear-gradient(0deg, transparent 0, transparent 5px, rgba(16,42,67,.045) 6px, transparent 7px); }
.hud-corner { position: absolute; z-index: 2; width: 34px; height: 34px; border-color: rgba(214,107,88,.8); border-style: solid; }
.hud-tl { top: -1px; left: -1px; border-width: 2px 0 0 2px; }.hud-tr { top: -1px; right: -1px; border-width: 2px 2px 0 0; }
.hud-bl { bottom: -1px; left: -1px; border-width: 0 0 2px 2px; }.hud-br { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.scanline { position: absolute; z-index: 3; left: 0; right: 0; height: 1px; background: rgba(214,107,88,.5); box-shadow: 0 0 14px 2px rgba(214,107,88,.3); animation: scan 5s linear infinite; }
@keyframes scan { from { top: 0; } to { top: 100%; } }
.matrix-stream { position: absolute; z-index: 1; color: rgba(16,42,67,.34); font: 700 .56rem/2.1 'Courier New', monospace; letter-spacing: .16em; white-space: nowrap; animation: code-flicker 3s steps(2) infinite; }
.matrix-left { top: 23%; left: 3%; }.matrix-right { right: 3%; bottom: 21%; text-align: right; animation-delay: -1.5s; }
@keyframes code-flicker { 0%, 100% { opacity: .2; transform: translateY(0); } 50% { opacity: .55; transform: translateY(7px); } }
.hud-status { position: absolute; z-index: 4; left: 50%; bottom: 16px; transform: translateX(-50%); color: rgba(16,42,67,.48); font: 700 .55rem 'Courier New', monospace; letter-spacing: .18em; white-space: nowrap; }
.hud-status b { color: var(--accent); margin: 0 7px; }.status-dot { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: #43c6ac; box-shadow: 0 0 8px #43c6ac; animation: pulse-dot 1.5s infinite; }
@keyframes pulse-dot { 50% { opacity: .35; transform: scale(.65); } }
@media (max-width: 520px) { .hacker-core { inset: 5vh 4vw; opacity: .42; } .matrix-stream { font-size: .45rem; } }

/* --- Authentic terminal lock --- */
.mystery-box-screen { background: #07131b; color: #b9e8df; }
.mystery-content h2 { color: #d9fff5; font-family: 'Courier New', monospace; font-size: clamp(1.5rem, 5vw, 2.35rem); letter-spacing: -.04em; }
.mystery-content p { color: #73958f; font-family: 'Courier New', monospace; font-size: .84rem; }
.box-container { margin-top: 1rem; padding: 18px; border: 1px solid rgba(67,198,172,.24); background: rgba(5,18,25,.7); box-shadow: 0 0 0 1px rgba(67,198,172,.05), 0 0 35px rgba(67,198,172,.08); }
.box-container::before { content: attr(data-label); display: block; margin-bottom: 10px; color: #477b76; font: 700 .52rem 'Courier New', monospace; letter-spacing: .2em; text-align: left; }
.mystery-box { width: min(310px, 68vw); height: 190px; border: 1px solid #2b8177; border-radius: 2px; background: linear-gradient(145deg, #102d35, #06141d); box-shadow: inset 0 0 30px rgba(0,0,0,.45), 0 0 20px rgba(67,198,172,.12); transform: none; display: flex; flex-direction: column; justify-content: center; gap: 18px; }
.mystery-box::before { content: ''; inset: 7px; width: auto; height: auto; border: 1px solid rgba(67,198,172,.18); border-radius: 0; background: repeating-linear-gradient(0deg, transparent, transparent 3px, rgba(67,198,172,.035) 4px); transform: none; pointer-events: none; }
.mystery-box.open { transform: translateY(4px); }
.mystery-box.open::before { transform: none; }
.lock-header, .lock-code { position: relative; z-index: 2; color: #5abdb0; font: 700 .58rem 'Courier New', monospace; letter-spacing: .16em; }
.lock-led { display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: #55e6be; box-shadow: 0 0 9px #55e6be; animation: pulse-dot 1.2s infinite; }
.keyhole { position: relative; z-index: 2; width: 52px; height: 52px; border: 1px solid #4dd9c3; border-radius: 2px; background: rgba(5,30,35,.9); box-shadow: 0 0 18px rgba(67,198,172,.25); }
.keyhole::after { display: none; }
.keyhole span { color: #63e8cf; font: 2.1rem/48px 'Courier New', monospace; }
.lock-code { color: #477b76; }.lock-code b { color: #d5fff5; font-weight: 400; letter-spacing: .35em; margin-left: 8px; }
.keys-container { margin-top: 1.2rem; gap: .6rem; }
.key { width: 64px; height: 42px; padding: 0; border: 1px solid rgba(67,198,172,.4); border-radius: 2px; background: #0b252d; box-shadow: inset 0 0 12px rgba(67,198,172,.08); }
.key::after { content: 'KEY_0' attr(data-index); color: #78cfc2; font: 700 .57rem/40px 'Courier New', monospace; letter-spacing: .08em; }
.key svg { display: none; }
.key:hover { border-color: #65ecd4; background: #123c42; box-shadow: 0 0 14px rgba(67,198,172,.25); transform: translateY(-3px); }
.key.wrong { background: #321d25; border-color: #a85a68; opacity: .6; }
.key.wrong::after { content: 'DENIED'; color: #d47b89; }

/* Decrypt text: muncul dari titik kanan menuju kiri seperti output terminal. */
.hacker-type { position: relative; transform: scaleX(0); transform-origin: right center; opacity: 0; }
.hacker-type::after { content: '▌'; color: var(--accent); margin-left: 5px; animation: terminal-cursor .75s steps(2) infinite; }
.card.show .line-1 { animation: decrypt-line .7s steps(24, end) .35s forwards; }
.card.show .line-2 { animation: decrypt-line .85s steps(22, end) 1.05s forwards; }
.card.show .line-3 { animation: decrypt-line 1.8s steps(62, end) 1.9s forwards; }
.card.show .line-4 { animation: decrypt-line .8s steps(25, end) 3.7s forwards; }
@keyframes decrypt-line { 0% { opacity: 0; transform: scaleX(0); filter: blur(4px); } 15% { opacity: 1; } 100% { opacity: 1; transform: scaleX(1); filter: blur(0); } }
.hacker-type.line-3 { transform-origin: right top; }
.hacker-type.line-4 { transform-origin: right center; }

/* Override reveal blok: pesan diketik benar-benar satu karakter per satu karakter. */
.card.show .hacker-type { animation: none; transform: none; opacity: 0; filter: none; }
.card.show .hacker-type.is-typing, .card.show .hacker-type.typed { opacity: 1; }

/* --- Step 03: decrypted hacker terminal --- */
#mainCard {
    background: linear-gradient(145deg, #0a1b24 0%, #061119 100%);
    border: 1px solid rgba(83, 226, 194, .42);
    border-radius: 4px;
    color: #b9f8e8;
    box-shadow: 0 0 0 1px rgba(83,226,194,.08), 0 0 35px rgba(35,192,165,.16), 0 28px 80px rgba(0,0,0,.35);
}
#mainCard::before { inset: 8px; border: 1px solid rgba(83,226,194,.17); border-radius: 1px; }
#mainCard::after { border-radius: 4px; background: repeating-linear-gradient(0deg, transparent 0, transparent 4px, rgba(83,226,194,.025) 5px); mix-blend-mode: screen; }
#mainCard .card-topline { color: #5b9f98; border-bottom: 1px solid rgba(83,226,194,.16); padding-bottom: 15px; }
#mainCard .card-topline span:first-child { border-color: #48d9bc; color: #6af2d0; border-radius: 2px; font-family: 'Courier New', monospace; }
#mainCard .topline-rule { background: rgba(83,226,194,.2); }
#mainCard .card-label { color: #63e6c7; font-size: .58rem; text-shadow: 0 0 8px rgba(83,226,194,.45); }
#mainCard img { border: 2px solid #5ce4c6; outline: 5px solid #0d2d35; box-shadow: 0 0 0 1px rgba(83,226,194,.25), 0 0 22px rgba(83,226,194,.24); filter: saturate(.7) contrast(1.15); }
#mainCard h1 { color: #e0fff7; font-family: 'Courier New', monospace; font-size: clamp(1.75rem, 6vw, 2.6rem); letter-spacing: -.08em; text-shadow: 0 0 14px rgba(83,226,194,.38); }
#mainCard .card-divider { color: #ed8c72; }
#mainCard .card-divider::before, #mainCard .card-divider::after { background: linear-gradient(90deg, transparent, rgba(83,226,194,.45)); }
#mainCard p { color: #8cb8af; font-family: 'Courier New', monospace; font-size: .82rem; line-height: 1.75; }
#mainCard .signature { color: #5d9189; font-family: 'Courier New', monospace; font-size: .75rem; }
#mainCard .signature span { color: #ed8c72; }
#mainCard .btn-surprise { background: #55d8ba; color: #05151b; border-radius: 2px; font-family: 'Courier New', monospace; font-size: .72rem; letter-spacing: .08em; box-shadow: 0 0 18px rgba(83,226,194,.25); }
#mainCard .btn-surprise:hover { background: #a1ffe9; color: #05151b; box-shadow: 0 0 28px rgba(83,226,194,.48); }
#mainCard .btn-surprise span:last-child { background: rgba(5,21,27,.2); }
#mainCard .surprise-message { background: #0d302d; border: 1px solid #55d8ba; color: #b9f8e8; border-radius: 2px; box-shadow: 0 0 25px rgba(83,226,194,.22); }
#mainCard .surprise-message p { color: #b9f8e8; }

/* --- Hacker environment background --- */
body {
    background-color: #03090d;
    background-image:
        linear-gradient(rgba(59, 211, 178, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 211, 178, .055) 1px, transparent 1px),
        radial-gradient(circle at 50% 48%, rgba(19, 102, 91, .28), transparent 35%),
        radial-gradient(circle at 10% 85%, rgba(7, 53, 65, .45), transparent 30%),
        radial-gradient(circle at 90% 12%, rgba(9, 64, 57, .38), transparent 28%);
    background-size: 42px 42px, 42px 42px, 100% 100%, 100% 100%, 100% 100%;
    color: #b9f8e8;
}
body::before { content: ''; position: fixed; inset: 0; z-index: -4; pointer-events: none; opacity: .18; background: repeating-linear-gradient(0deg, transparent 0, transparent 3px, rgba(78,240,204,.07) 4px); animation: bg-scan 8s linear infinite; }
body::after { content: '01001101 00100000 01000101 01001110 01000011 01010010 01011001 01010000 01010100 01000101 01000100'; position: fixed; left: 50%; bottom: 5px; z-index: -1; transform: translateX(-50%); color: rgba(81,226,195,.12); font: 9px 'Courier New', monospace; letter-spacing: .25em; white-space: nowrap; pointer-events: none; }
@keyframes bg-scan { from { transform: translateY(-20px); } to { transform: translateY(20px); } }
.ambient { opacity: .08; filter: blur(110px); }
.ambient-one { background: #2ee6bd; }.ambient-two { background: #1c6781; }
.hacker-core { border-color: rgba(83,226,194,.22); opacity: .8; }
.hacker-core::before { background: linear-gradient(90deg, transparent 49.9%, rgba(83,226,194,.11) 50%, transparent 50.1%), linear-gradient(0deg, transparent 49.9%, rgba(83,226,194,.11) 50%, transparent 50.1%); }

/* --- Hacker background across every screen --- */
.fake-404-screen, .photo-upload-screen, .mystery-box-screen, .splash, .finale-screen {
    color: #b9f8e8;
    background-color: #03090d;
    background-image:
        linear-gradient(rgba(59,211,178,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,211,178,.055) 1px, transparent 1px),
        radial-gradient(circle at 50% 45%, rgba(10,92,86,.25), transparent 42%);
    background-size: 42px 42px, 42px 42px, 100% 100%;
}
.fake-404-screen::before, .photo-upload-screen::before, .mystery-box-screen::before, .splash::before, .finale-screen::before {
    content: ''; position: absolute; inset: 0; pointer-events: none; opacity: .45;
    background: repeating-linear-gradient(0deg, transparent 0, transparent 4px, rgba(83,226,194,.035) 5px);
}
.upload-content h2, .mystery-content h2, .splash h2 { color: #d9fff5; font-family: 'Courier New', monospace; text-shadow: 0 0 12px rgba(83,226,194,.28); }
.upload-content p, .mystery-content p, .splash p { color: #77a69d; font-family: 'Courier New', monospace; }
.upload-content .upload-btn, .upload-content button, .splash button { background: #55d8ba; color: #041117; border: 1px solid #8bffe7; border-radius: 2px; font-family: 'Courier New', monospace; box-shadow: 0 0 18px rgba(83,226,194,.2); }
.upload-content .upload-btn:hover, .upload-content button:hover, .splash button:hover { background: #a1ffe9; color: #041117; }
.splash .icon-envelope { filter: hue-rotate(100deg) saturate(1.6) drop-shadow(0 0 14px rgba(83,226,194,.4)); }
.finale-screen { background-color: rgba(3,9,13,.97); }
.finale-title { color: #d9fff5; font-family: 'Courier New', monospace; text-shadow: 0 0 18px rgba(83,226,194,.38); }
.finale-text { color: #77a69d; font-family: 'Courier New', monospace; }
.finale-content::after { content: 'SECURE MESSAGE · DELIVERED'; color: rgba(83,226,194,.42); }
.error-content h1 { color: #55d8ba; text-shadow: 0 0 12px #55d8ba, 0 0 30px rgba(83,226,194,.4); }

/* Fireworks intro */
.firework-burst { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: currentColor; box-shadow: 0 0 12px currentColor; opacity: 0; animation: firework-pop 1.6s ease-out forwards; }
.firework-burst i { position: absolute; left: 1px; top: 1px; width: 3px; height: 20px; border-radius: 100%; background: linear-gradient(currentColor, transparent); transform-origin: 50% 0; transform: rotate(var(--angle)) translateY(var(--distance)); opacity: 0; animation: firework-spark 1.4s ease-out forwards; animation-delay: inherit; }
@keyframes firework-pop { 0%, 12% { opacity: 0; transform: scale(.2); } 25% { opacity: 1; transform: scale(1); } 75% { opacity: 1; } 100% { opacity: 0; transform: scale(1.4); } }
@keyframes firework-spark { 0% { opacity: 0; transform: rotate(var(--angle)) translateY(0) scaleY(.2); } 18% { opacity: 1; } 100% { opacity: 0; transform: rotate(var(--angle)) translateY(var(--distance)) scaleY(1); } }
.hacker-type::after { display: none; }
.hacker-type.is-typing::after { display: inline; }