/* Common Design System — shared across all pages */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-page: #f8fafc;
    --sidebar-bg: #f7f8fa;
    --surface: #f0f1f3;
    --surface-muted: #f1f5f9;
    --surface-subtle: #f8fafc;
    --glass-bg: rgba(255, 255, 255, 0.96);
    --glass-border: #d0d5dd;
    --border-hover: #a0a5ad;
    --accent: #20b8cd;
    --accent-hover: #0ea5b7;
    --accent-soft: rgba(32, 184, 205, 0.12);
    --accent-border: rgba(32, 184, 205, 0.24);
    --text-primary: #1a1a2e;
    --text-muted: #6b7280;
    --text-secondary: #9ca3af;
    --success: #10b981;
    --error: #ef4444;
    --info: #60a5fa;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.45) transparent;
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-size: 1rem;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Shared brand lockup */
.brand-lockup {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.brand-logo {
    width: 48px;
    height: 48px;
    flex: 0 0 auto;
}

.brand-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
}

.brand-subtitle {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Shared button styles */
.btn {
    background: var(--accent);
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: none;
    text-decoration: none;
}

.btn:hover:not(:disabled) {
    background: var(--accent-hover);
    color: #ffffff;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn.btn-secondary:hover:not(:disabled) {
    background: var(--surface);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

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

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

/* Shared header / Top navigation */
header {
    padding: 1rem 1.5rem;
    background: #ffffff;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    height: 64px;
    box-sizing: border-box;
    width: 100%;
}

/* Shared spinner */
.spinner {
    display: none;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(148, 163, 184, 0.18);
    border-left-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 1.5rem auto;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

/* Utilities */
.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-pill {
    border-radius: 20px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--accent-soft);
    border: 1px solid var(--accent-border);
    color: var(--accent);
}

/* Shared scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(148, 163, 184, 0.15);
}

::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.45);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 0.6);
}

/* Site footer */
.site-footer {
    margin-top: auto;
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: #ffffff;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}