:root {
    --bg-color: #0f1115;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #6366f1;
    /* Indigo */
    --accent-hover: #4f46e5;
    --error: #ef4444;
    --glass-border: rgba(255, 255, 255, 0.1);
    --blur: 20px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: #000000;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    color: var(--text-primary);
}



.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, opacity 0.3s ease;
    animation: fadeIn 0.8s ease-out;
}

.card.hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.icon-lock,
.icon-unlock {
    margin-bottom: 20px;
    color: var(--accent);
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.3));
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

input {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 14px 50px 14px 16px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s, background 0.3s;
}

input:focus {
    border-color: var(--accent);
    background: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

button {
    position: absolute;
    right: 8px;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    padding: 8px;
    color: white;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

button:hover {
    background: var(--accent-hover);
}

button:active {
    transform: scale(0.95);
}

.error {
    color: var(--error);
    font-size: 0.85rem;
    margin-top: -10px;
    margin-bottom: 10px;
    opacity: 1;
    transition: opacity 0.3s;
}

.error.hidden {
    opacity: 0;
}

.shake {
    animation: shake 0.5s cubic-bezier(.36, .07, .19, .97) both;
}

audio {
    width: 100%;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
}

audio::-webkit-media-controls-panel {
    background-color: rgba(255, 255, 255, 0.8);
}

.download-link {
    display: inline-block;
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 8px 16px;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    transition: background 0.3s, color 0.3s;
}

.download-link:hover {
    background: rgba(99, 102, 241, 0.1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shake {

    10%,
    90% {
        transform: translate3d(-1px, 0, 0);
    }

    20%,
    80% {
        transform: translate3d(2px, 0, 0);
    }

    30%,
    50%,
    70% {
        transform: translate3d(-4px, 0, 0);
    }

    40%,
    60% {
        transform: translate3d(4px, 0, 0);
    }
}