/* enɳoté - Dark Theme Styles */
/* Color Palette from spec */
:root {
    --background: #171717;
    --surface: #212121;
    --surface-elevated: #2A2A2A;
    --text-primary: #FAFAFA;
    --text-secondary: #A3A3A3;
    --accent: #FBBF23;
    --accent-muted: #78590A;
    --success: #4ADE80;
    --border: #2E2E2E;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 2.5rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Main Content */
main {
    flex: 1;
}

.section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.hidden {
    display: none !important;
}

/* Input Section */
label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    min-height: 200px;
    transition: border-color 0.2s ease;
}

textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.note-count {
    text-align: right;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.note-count span {
    color: var(--accent);
    font-weight: 600;
}

/* Buttons */
button {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.primary-button {
    background-color: var(--accent);
    color: var(--background);
}

.primary-button:hover {
    background-color: #E5AC1F;
    transform: translateY(-1px);
}

.primary-button:active {
    transform: translateY(0);
}

.primary-button:disabled {
    background-color: var(--accent-muted);
    cursor: not-allowed;
    transform: none;
}

.secondary-button {
    background-color: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.secondary-button:hover {
    background-color: var(--surface-elevated);
    border-color: var(--text-secondary);
}

/* QR Section */
#qr-section {
    align-items: center;
    text-align: center;
}

.qr-container {
    background-color: white;
    padding: 1.5rem;
    border-radius: 16px;
    margin-bottom: 1.5rem;
}

#qr-canvas {
    display: block;
    width: 200px;
    height: 200px;
}

/* Timer */
.timer-container {
    width: 100%;
    margin-bottom: 1rem;
}

.timer-bar {
    height: 4px;
    background-color: var(--surface);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.timer-progress {
    height: 100%;
    background-color: var(--accent);
    width: 100%;
    transition: width 1s linear;
}

.timer-progress.warning {
    background-color: #F97316;
}

.timer-progress.critical {
    background-color: #EF4444;
}

.timer-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.timer-text span {
    color: var(--text-primary);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

.instruction {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Footer */
footer {
    margin-top: 2rem;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

footer p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 1.5rem 1rem;
    }

    header h1 {
        font-size: 1.75rem;
    }

    textarea {
        min-height: 180px;
    }
}

/* Animation for QR appearance */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

#qr-section:not(.hidden) {
    animation: fadeIn 0.3s ease-out;
}