/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-card: rgba(30, 30, 60, 0.6);
    --bg-glass: rgba(255, 255, 255, 0.05);

    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --text-muted: #6060a0;

    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);

    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    --gemini-gradient: linear-gradient(135deg, #4285f4, #34a853, #fbbc05, #ea4335);

    --border-color: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    background-image:
        radial-gradient(ellipse at top left, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
}

/* ===== Container ===== */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

/* ===== Glass Card ===== */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

/* ===== Header ===== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    margin-bottom: 24px;
}

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

.logo .material-icons {
    font-size: 32px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

/* ===== Sections ===== */
.section {
    margin-bottom: 24px;
    padding: 24px;
}

.section-title {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.section h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.section h2 .material-icons {
    color: var(--accent-primary);
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group small {
    display: block;
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.form-group small a {
    color: var(--accent-primary);
    text-decoration: none;
}

.form-group small a:hover {
    text-decoration: underline;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

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

.btn-icon {
    padding: 10px;
    border-radius: 50%;
}

.btn-primary {
    background: var(--accent-gradient);
    border: none;
}

.btn-primary:hover {
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
}

.btn-success {
    background: var(--success);
    border: none;
}

.btn-success:hover {
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
}

.btn-gemini {
    background: var(--gemini-gradient);
    border: none;
    background-size: 300% 300%;
    animation: geminiGradient 5s ease infinite;
}

@keyframes geminiGradient {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.btn-large {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-back {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
}

.btn-back:hover {
    color: var(--text-primary);
    background: transparent;
}

.btn-nav {
    width: 56px;
    height: 56px;
    padding: 0;
    border-radius: 50%;
    font-size: 1.5rem;
}

.btn-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

/* ===== Record Button ===== */
.btn-record {
    padding: 16px 40px;
    font-size: 1.1rem;
    border-radius: var(--radius-xl);
    background: var(--accent-gradient);
    border: none;
    gap: 12px;
}

.btn-record.recording {
    background: var(--danger);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
    }

    50% {
        box-shadow: 0 0 0 20px rgba(239, 68, 68, 0);
    }
}

.btn-record .material-icons {
    font-size: 28px;
}

/* ===== Category Grid ===== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.category-card {
    padding: 24px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.2);
}

.category-card:hover::before {
    transform: scaleX(1);
}

.category-card .icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.category-card .icon .material-icons {
    font-size: 24px;
    color: white;
}

.category-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.category-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.category-card .question-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

.category-card.has-progress {
    border-color: var(--success);
}

.category-card .progress-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background: var(--success);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ===== Interview Section ===== */
.interview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.interview-info {
    display: flex;
    gap: 8px;
}

.category-badge,
.section-badge {
    padding: 6px 14px;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
}

.category-badge {
    background: var(--accent-gradient);
    border: none;
}

.progress-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.progress-bar {
    width: 120px;
    height: 6px;
    background: var(--bg-glass);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* ===== Question Container ===== */
.question-container {
    text-align: center;
    margin-bottom: 32px;
}

.question-number {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.question-text {
    font-size: 1.5rem;
    font-weight: 500;
    line-height: 1.5;
    max-width: 800px;
    margin: 0 auto;
}

/* ===== Question Navigator ===== */
.question-navigator {
    margin-bottom: 24px;
    padding: 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.nav-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-label .material-icons {
    font-size: 16px;
}

.question-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.question-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: var(--transition);
    cursor: pointer;
}

.question-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.question-item.current {
    background: var(--accent-gradient);
    font-weight: 600;
}

.question-item.past {
    opacity: 0.5;
}

.question-item.past.answered {
    opacity: 0.7;
    border-left: 3px solid var(--success);
}

.question-item.future {
    color: var(--text-secondary);
}

.question-item-number {
    flex-shrink: 0;
    width: 32px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.question-item.current .question-item-number {
    background: rgba(255, 255, 255, 0.2);
}

.question-item-text {
    flex: 1;
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.question-item-status {
    flex-shrink: 0;
    font-size: 16px;
}

.question-item-status .material-icons {
    font-size: 16px;
    color: var(--success);
}

/* ===== Answer Container ===== */
.answer-container {
    margin-bottom: 32px;
}

.transcript-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.transcript-box {
    min-height: 150px;
    max-height: 300px;
    overflow-y: auto;
    padding: 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.transcript-text {
    font-size: 1.1rem;
    line-height: 1.7;
}

.transcript-text.placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.interim-text {
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 8px;
}

/* ===== Controls ===== */
.controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin-bottom: 32px;
}

.interview-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== Export Section ===== */
.export-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.stat-card {
    text-align: center;
    padding: 24px;
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.export-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.analysis-result {
    margin-top: 32px;
    padding: 24px;
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.analysis-result h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--accent-primary);
}

.analysis-content {
    font-size: 1rem;
    line-height: 1.8;
    white-space: pre-wrap;
    max-height: 400px;
    overflow-y: auto;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    width: 100%;
    max-width: 450px;
    padding: 0;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    margin: 0;
}

.close-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

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

.modal-body {
    padding: 24px;
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 14px 28px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    z-index: 1001;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    border-color: var(--success);
}

.toast.error {
    border-color: var(--danger);
}

/* ===== Utilities ===== */
.hidden {
    display: none !important;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    .header {
        padding: 12px 16px;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .section {
        padding: 16px;
    }

    .question-text {
        font-size: 1.2rem;
    }

    .controls {
        gap: 16px;
    }

    .btn-record {
        padding: 14px 28px;
        font-size: 1rem;
    }

    .export-stats {
        grid-template-columns: 1fr;
    }

    .export-actions {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}