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

:root {
    --bg-primary: #121212;
    --bg-secondary: #181818;
    --bg-tertiary: #282828;
    --accent: #1db954;
    --accent-hover: #1ed760;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #727272;
    --player-height: 90px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding-bottom: calc(var(--player-height) + 40px);
}

/* Donation Button */
.donate-wrapper {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1002;
}

.donate-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--bg-tertiary);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.donate-btn:hover {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, #333 100%);
    border-color: var(--text-muted);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.crypto-icons {
    display: flex;
    align-items: center;
    gap: 6px;
}

.crypto-icon {
    width: 18px;
    height: 18px;
    opacity: 0.9;
    transition: opacity 0.2s, transform 0.2s;
}

.donate-btn:hover .crypto-icon {
    opacity: 1;
}

.donate-btn:hover .crypto-icon:nth-child(1) { transform: scale(1.1); }
.donate-btn:hover .crypto-icon:nth-child(2) { transform: scale(1.1); transition-delay: 0.05s; }
.donate-btn:hover .crypto-icon:nth-child(3) { transform: scale(1.1); transition-delay: 0.1s; }

/* Dropdown */
.donate-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 320px;
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    border-radius: 12px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.donate-wrapper:hover .donate-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.donate-item {
    padding: 12px 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
    position: relative;
}

.donate-item:hover {
    background: var(--bg-tertiary);
}

.donate-item-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.donate-item-icon {
    width: 22px;
    height: 22px;
}

.donate-item-name {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.donate-item-address {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    word-break: break-all;
    line-height: 1.4;
    padding-right: 70px;
}

.donate-copy-hint {
    position: absolute;
    right: 14px;
    bottom: 12px;
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
}

.donate-item:hover .donate-copy-hint {
    opacity: 1;
}

.donate-item.copied .donate-copy-hint {
    color: var(--accent);
    opacity: 1;
}

.donate-item.copied .donate-item-address {
    color: var(--accent);
}

/* Mobile responsiveness for donate button */
@media (max-width: 600px) {
    .donate-wrapper {
        top: 12px;
        left: 12px;
    }

    .donate-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    .crypto-icon {
        width: 14px;
        height: 14px;
    }

    .donate-dropdown {
        min-width: 280px;
        max-width: calc(100vw - 24px);
    }

    .donate-item-address {
        font-size: 0.65rem;
    }
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 60px 20px;
    text-align: center;
}

header {
    margin-bottom: 40px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--accent) 0%, #1ed760 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

#link-form {
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

#link-input {
    width: 100%;
    padding: 16px 20px;
    font-size: 1rem;
    border: 2px solid var(--bg-tertiary);
    border-radius: 50px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

#link-input::placeholder {
    color: var(--text-muted);
}

#link-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(29, 185, 84, 0.2);
}

#submit-btn {
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    background: var(--accent);
    color: var(--bg-primary);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

#submit-btn:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: scale(1.02);
}

#submit-btn:active:not(:disabled) {
    transform: scale(0.98);
}

#submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--bg-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-message {
    background: #ff4444;
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    margin-top: 16px;
    font-size: 0.9rem;
}

/* Text Display Container */
.text-container {
    margin-top: 24px;
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
    text-align: left;
    border: 1px solid var(--bg-tertiary);
}

.text-content {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-muted);
}

.text-content .sentence {
    display: inline;
    padding: 4px 8px;
    margin: 2px 0;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s;
}

.text-content .sentence.active {
    color: #ff4444;
    background-color: rgba(255, 68, 68, 0.12);
    font-weight: 500;
}

.text-content .sentence.spoken {
    color: var(--text-primary);
}

.hidden {
    display: none !important;
}

/* Loading Progress Indicator */
.loading-indicator {
    position: fixed;
    bottom: 110px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-secondary);
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--bg-tertiary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 1001;
}

.loading-spinner {
    position: relative;
    width: 40px;
    height: 40px;
}

.progress-ring {
    width: 40px;
    height: 40px;
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 3;
}

.progress-ring-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 100.53;
    stroke-dashoffset: 100.53;
    transition: stroke-dashoffset 0.3s ease;
}

.loading-percent {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-primary);
}

.loading-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Audio Player */
.audio-player {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--player-height);
    background: var(--bg-secondary);
    border-top: 1px solid var(--bg-tertiary);
    z-index: 1000;
}

.player-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 24px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
}

/* Progress Section */
.progress-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    min-width: 40px;
    font-variant-numeric: tabular-nums;
}

.time:first-child {
    text-align: right;
}

/* Streaming Status */
.streaming-status {
    display: none;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.streaming-status.visible {
    display: flex;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-indicator.streaming {
    background: #f39c12;
    animation: pulse 1s infinite;
}

.status-indicator.ready {
    background: var(--accent);
}

.status-indicator.error {
    background: #e74c3c;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.progress-bar-container {
    flex: 1;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    cursor: pointer;
    position: relative;
    transition: height 0.1s;
}

.progress-bar-container:hover {
    height: 6px;
}

.progress-bar-container:hover .progress-handle {
    opacity: 1;
}

/* Buffer bar - shows how much is loaded */
.buffer-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    width: 0%;
    z-index: 1;
}

.progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    width: 0%;
    z-index: 2;
    transition: background 0.1s;
}

.progress-bar-container:hover .progress-bar {
    background: var(--accent-hover);
}

.progress-handle {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--text-primary);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.1s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    z-index: 3;
    left: 0%;
}

/* Seek tooltip warning */
.seek-tooltip {
    position: absolute;
    top: -30px;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    color: #f39c12;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 10;
}

.seek-tooltip.visible {
    opacity: 1;
}

/* Controls Section */
.controls-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.controls-right {
    justify-content: flex-end;
}

.controls-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.1s, transform 0.1s;
}

.control-btn:hover {
    color: var(--text-primary);
    transform: scale(1.1);
}

.control-btn svg {
    width: 20px;
    height: 20px;
}

.play-btn {
    width: 40px;
    height: 40px;
    background: var(--text-primary);
    color: var(--bg-primary);
}

.play-btn:hover {
    transform: scale(1.06);
    color: var(--bg-primary);
}

.play-btn svg {
    width: 24px;
    height: 24px;
}

/* Speed Control */
.speed-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.speed-control label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

#speed-select {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
}

#speed-select:hover {
    background: #333;
}

/* Volume Slider */
.volume-slider-container {
    width: 100px;
}

#volume-slider {
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: 2px;
    cursor: pointer;
}

#volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}

#volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

#volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 40px 16px;
    }

    h1 {
        font-size: 2rem;
    }

    .player-content {
        padding: 8px 16px;
    }

    .volume-slider-container {
        display: none;
    }

    .controls-left,
    .controls-right {
        flex: 0;
    }
}