/* AIezzy-inspired Design System */
:root {
    --primary-bg: #FFFFFF;
    --secondary-bg: #F5F7F9;
    --accent-color: #0EA5E9;
    --accent-hover: #0284C7;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'Roboto', 'Oxygen',
                 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--secondary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Top Navigation */
.top-nav {
    background-color: var(--primary-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo {
    height: 40px;
    width: auto;
}

.nav-page-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-link {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: background 0.2s;
}

.nav-link:hover {
    background-color: var(--secondary-bg);
}

.container {
    min-height: calc(100vh - 65px);
}

/* Main Content */
.main-content-full {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

/* Welcome Screen */
.welcome-screen {
    text-align: center;
}

.welcome-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.welcome-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Audio Input Container */
.audio-input-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

/* Upload Area */
.upload-area {
    background-color: var(--primary-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.upload-area:hover {
    border-color: var(--accent-color);
    background-color: #F0F9FF;
}

.upload-area.dragging {
    border-color: var(--accent-color);
    background-color: #E0F2FE;
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.upload-icon {
    color: var(--accent-color);
    width: 48px;
    height: 48px;
}

.upload-content h3 {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.upload-content p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin: 0;
}

.upload-formats {
    color: var(--text-muted);
    font-size: 0.7rem !important;
}

/* Example Cards */
.example-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.example-card {
    background-color: var(--primary-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
}

.example-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.example-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.example-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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


.record-option-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1rem;
    background-color: var(--primary-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.record-option-btn svg {
    width: 32px;
    height: 32px;
    color: var(--accent-color);
}

.record-option-btn span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.record-option-btn p {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin: 0;
    text-align: center;
}

.record-option-btn:hover {
    border-color: var(--accent-color);
    background-color: #F0F9FF;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-stop-record {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: #EF4444;
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 1rem;
}

.btn-stop-record:hover {
    background-color: #DC2626;
    transform: translateY(-2px);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.recording-status {
    text-align: center;
    margin-top: 2rem;
}

.recording-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.recording-dot {
    width: 12px;
    height: 12px;
    background-color: #EF4444;
    border-radius: 50%;
    animation: blink 1s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

#recordingTime {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

/* Loading Screen */
.loading-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.loading-content {
    text-align: center;
}

.spinner {
    width: 64px;
    height: 64px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

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

.loading-content h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

/* Results Screen */
.results-header {
    margin-bottom: 2rem;
}

/* Audio Playback */
.audio-playback-section {
    margin-bottom: 2rem;
}

.audio-playback-card {
    background-color: var(--primary-bg);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.audio-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 500;
}

.audio-info svg {
    color: var(--accent-color);
}

#audioPlayer {
    width: 100%;
    height: 40px;
    outline: none;
}

#audioPlayer::-webkit-media-controls-panel {
    background-color: var(--secondary-bg);
}

#audioPlayer::-webkit-media-controls-play-button,
#audioPlayer::-webkit-media-controls-pause-button {
    background-color: var(--accent-color);
    border-radius: 50%;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Result Content */
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.result-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.result-content {
    background-color: var(--primary-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    white-space: pre-wrap;
    line-height: 1.8;
    color: var(--text-primary);
    min-height: 400px;
}

/* Buttons */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background-color: var(--secondary-bg);
    color: var(--text-primary);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: var(--accent-color);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-download:hover {
    background-color: var(--accent-hover);
}

/* Responsive Design */

/* Tablet and below */
@media (max-width: 1024px) {
    .audio-input-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .nav-logo {
        height: 36px;
    }
}

/* Mobile devices */
@media (max-width: 768px) {
    .top-nav {
        padding: 0.75rem 1rem;
    }

    .nav-brand {
        font-size: 1rem;
    }

    .nav-page-title {
        font-size: 14px;
    }

    .nav-logo {
        height: 32px;
    }

    .nav-link {
        font-size: 12px;
        padding: 6px 12px;
    }

    .main-content-full {
        padding: 1rem;
    }

    .welcome-title {
        font-size: 1.5rem;
        margin-bottom: 0.75rem;
    }

    .welcome-subtitle {
        font-size: 0.875rem;
        margin-bottom: 1.5rem;
    }

    .audio-input-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* Touch-optimized upload area */
    .upload-area {
        padding: 2rem 1rem;
        min-height: 180px;
    }

    .upload-icon {
        width: 40px;
        height: 40px;
    }

    .upload-content h3 {
        font-size: 0.95rem;
    }

    /* Touch-friendly recording buttons */
    .record-option-btn {
        padding: 1.75rem 1.25rem;
        min-height: 140px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(14, 165, 233, 0.1);
    }

    .record-option-btn svg {
        width: 40px;
        height: 40px;
    }

    .record-option-btn span {
        font-size: 1rem;
    }

    .record-option-btn p {
        font-size: 0.8rem;
    }

    /* Improve button spacing for touch */
    .btn-stop-record {
        padding: 1rem 2rem;
        font-size: 1rem;
        min-height: 48px;
        touch-action: manipulation;
    }

    /* Better tab buttons for touch */
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 0.25rem;
    }

    .tab-btn {
        padding: 1rem 1.25rem;
        font-size: 0.9rem;
        white-space: nowrap;
        min-width: fit-content;
        touch-action: manipulation;
    }

    /* Results screen adjustments */
    .result-content {
        padding: 1.25rem;
        font-size: 0.9rem;
        min-height: 300px;
    }

    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .result-header h3 {
        font-size: 1.25rem;
    }

    /* Touch-optimized buttons */
    .btn-secondary,
    .btn-download {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
        min-height: 44px;
        touch-action: manipulation;
    }

    /* Audio playback */
    .audio-playback-card {
        padding: 1.25rem;
    }

    #audioPlayer {
        height: 48px;
    }

    /* Recording status */
    .recording-indicator {
        padding: 1rem 1.5rem;
    }

    #recordingTime {
        font-size: 1.25rem;
    }

    .example-cards {
        grid-template-columns: 1fr;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    .nav-page-title {
        display: none;
    }

    .nav-logo {
        height: 28px;
    }

    .welcome-title {
        font-size: 1.25rem;
    }

    .welcome-subtitle {
        font-size: 0.8rem;
    }

    .upload-area {
        padding: 1.5rem 0.75rem;
        min-height: 160px;
    }

    .record-option-btn {
        padding: 1.5rem 1rem;
        min-height: 130px;
    }

    .record-option-btn svg {
        width: 36px;
        height: 36px;
    }

    .record-option-btn span {
        font-size: 0.9rem;
    }

    .record-option-btn p {
        font-size: 0.75rem;
    }

    .result-content {
        padding: 1rem;
        font-size: 0.85rem;
    }

    .result-header h3 {
        font-size: 1.125rem;
    }

    .tab-btn {
        padding: 0.875rem 1rem;
        font-size: 0.85rem;
    }
}

/* Prevent zoom on input focus (iOS) */
@media (max-width: 768px) {
    input[type="file"] {
        font-size: 16px;
    }
}

/* Landscape mode adjustments */
@media (max-width: 768px) and (orientation: landscape) {
    .upload-area {
        min-height: 120px;
        padding: 1.25rem 1rem;
    }

    .record-option-btn {
        min-height: 100px;
        padding: 1.25rem 1rem;
    }

    .audio-input-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* High DPI screens - improve touch targets */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .record-option-btn:active {
        transform: scale(0.98);
    }

    .btn-stop-record:active,
    .btn-download:active,
    .btn-secondary:active {
        transform: scale(0.97);
    }
}

/* Options Page */
.options-page {
    padding: 2rem 0;
}

/* Action Buttons Grid */
.action-buttons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 2rem 1.5rem;
    background-color: var(--primary-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.action-btn svg {
    color: var(--accent-color);
}

.action-btn span {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.action-btn p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    text-align: center;
}

.action-btn:hover {
    border-color: var(--accent-color);
    background-color: #F0F9FF;
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.action-btn:active {
    transform: translateY(-2px);
}

/* Custom Prompt Section */
.custom-prompt-section {
    background-color: var(--primary-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider span {
    padding: 0 1rem;
}

#customPrompt {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--text-primary);
    resize: vertical;
    transition: border-color 0.2s;
    margin-bottom: 1rem;
}

#customPrompt:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: #F0F9FF;
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background-color: var(--accent-color);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    justify-content: center;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Results Page Content */
.results-page-content {
    padding: 1rem 0;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-back:hover {
    background-color: var(--secondary-bg);
    color: var(--text-primary);
    border-color: var(--accent-color);
}

/* Responsive Design for new elements */
@media (max-width: 1024px) {
    .action-buttons-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
    }
}

@media (max-width: 768px) {
    .action-buttons-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .action-btn {
        padding: 1.75rem 1.25rem;
        min-height: 140px;
        touch-action: manipulation;
    }

    .custom-prompt-section {
        padding: 1.5rem;
    }

    #customPrompt {
        font-size: 16px; /* Prevent zoom on iOS */
    }

    .btn-primary {
        padding: 1rem 1.5rem;
        font-size: 1rem;
        min-height: 48px;
        touch-action: manipulation;
    }
}

@media (max-width: 480px) {
    .action-btn {
        padding: 1.5rem 1rem;
        min-height: 120px;
    }

    .action-btn span {
        font-size: 1rem;
    }

    .action-btn svg {
        width: 28px;
        height: 28px;
    }

    .custom-prompt-section {
        padding: 1.25rem;
    }
}