/* ============================================
   LAK PerformanceCap – Stylesheet
   Apple-inspired, minimal, precise
   ============================================ */

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

:root {
    --bg: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #fbfbfd;
    --surface: #ffffff;
    --border: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.14);
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #aeaeb2;
    --accent: #0071e3;
    --accent-hover: #0077ED;
    --accent-light: rgba(0, 113, 227, 0.08);
    --success: #34c759;
    --success-bg: rgba(52, 199, 89, 0.08);
    --warning: #ff9f0a;
    --warning-bg: rgba(255, 159, 10, 0.08);
    --error: #ff3b30;
    --error-bg: rgba(255, 59, 48, 0.06);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 40px rgba(0, 0, 0, 0.10);
    --transition: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    color: var(--text-primary);
    background: var(--bg);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

/* --- Navigation --- */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
    height: 52px;
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
}

.nav-brand:hover {
    color: var(--text-primary);
}

.nav-logo {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 4px;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

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

.nav-link--active {
    color: var(--text-primary);
}

.nav-link--subtle {
    color: var(--text-tertiary);
}

.nav-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-user {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* --- Auth Pages (Login, Register) --- */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-secondary);
}

.auth-container {
    width: 100%;
    max-width: 400px;
    padding: 24px;
}

.auth-header {
    text-align: center;
    margin-bottom: 40px;
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.auth-logo svg {
    width: 32px;
    height: 32px;
}

.auth-logo span {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.auth-subtitle {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.auth-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.auth-footer a {
    font-weight: 500;
}

/* --- Forms --- */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9375rem;
    font-family: var(--font);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius);
    outline: none;
    transition: all var(--transition);
}

.form-input:focus {
    background: var(--bg);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

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

.form-hint {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: var(--font);
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.btn--primary {
    background: var(--accent);
    color: #ffffff;
}

.btn--primary:hover {
    background: var(--accent-hover);
    transform: scale(1.005);
}

.btn--primary:active {
    transform: scale(0.995);
}

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

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

.btn--secondary:hover {
    background: var(--border);
}

.btn--small {
    padding: 8px 16px;
    font-size: 0.8125rem;
}

.btn--icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* --- Alerts --- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 20px;
    line-height: 1.5;
}

.alert--error {
    background: var(--error-bg);
    color: var(--error);
}

.alert--success {
    background: var(--success-bg);
    color: #1a8d3b;
}

.alert--warning {
    background: var(--warning-bg);
    color: #996000;
}

/* --- Main Content --- */
.main {
    flex: 1;
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    padding: 40px 24px;
}

/* --- Page Header --- */
.page-header {
    margin-bottom: 36px;
}

.page-header--row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: 400;
}

/* --- Stats Row --- */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 36px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    transition: all var(--transition);
}

.stat-card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow);
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.stat-detail {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* --- Cards / Project List --- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
}

.card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.card-desc {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.card-meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* --- Job Status Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.badge--queued {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.badge--processing {
    background: var(--accent-light);
    color: var(--accent);
}

.badge--completed {
    background: var(--success-bg);
    color: #1a8d3b;
}

.badge--failed {
    background: var(--error-bg);
    color: var(--error);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.badge--processing .badge-dot {
    animation: pulse 1.5s ease-in-out infinite;
}

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

/* --- Table --- */
.table-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    text-align: left;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 12px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.table td {
    padding: 14px 20px;
    font-size: 0.875rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: var(--bg-tertiary);
}

.table-filename {
    font-weight: 500;
}

.table-secondary {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

/* --- Upload Area --- */
.upload-zone {
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
    background: var(--bg-tertiary);
}

.upload-zone:hover,
.upload-zone--active {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-zone-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--text-tertiary);
    transition: color var(--transition);
}

.upload-zone:hover .upload-zone-icon,
.upload-zone--active .upload-zone-icon {
    color: var(--accent);
}

.upload-zone-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.upload-zone-hint {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

/* --- Progress Bar --- */
.progress {
    height: 4px;
    background: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-bar {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.4s ease;
}

.progress-bar--success {
    background: var(--success);
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 64px 24px;
}

.empty-state-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    color: var(--text-tertiary);
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.empty-state-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 24px;
}

.modal-overlay--active {
    display: flex;
}

.modal {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: 32px;
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-xl);
    animation: modalIn 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.96) translateY(8px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.modal-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 24px;
}

/* --- Footer --- */
.footer {
    padding: 24px;
    text-align: center;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.footer-inner {
    max-width: 1120px;
    margin: 0 auto;
}

.footer-text {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.footer-sep {
    color: var(--text-tertiary);
    margin: 0 6px;
    font-size: 0.75rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav-inner {
        padding: 0 16px;
    }

    .main {
        padding: 24px 16px;
    }

    .page-title {
        font-size: 1.375rem;
    }

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

    .card-grid {
        grid-template-columns: 1fr;
    }

    .page-header--row {
        flex-direction: column;
        align-items: flex-start;
    }

    .modal {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .stats {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }
}