:root {
    /* Colors */
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;

    /* Theme Colors */
    --theme-blue: #3b82f6;
    --theme-green: #10b981;
    --theme-orange: #f59e0b;
    --theme-purple: #8b5cf6;
    --theme-teal: #14b8a6;
    --theme-red: #ef4444;
    --theme-indigo: #6366f1;

    /* Badges */
    --badge-bg: #f1f5f9;
    --badge-text: #475569;

    /* Layout */
    --container-max: 1200px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.03);

    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Top Navbar */
.top-navbar {
    background-color: var(--text-primary);
    color: white;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    padding: 0 1rem;
}

.nav-item {
    position: relative;
    padding: 0.85rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.2s;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    min-width: 320px;
    z-index: 200;
    flex-direction: column;
    padding: 0.5rem 0;
    border: 1px solid var(--border-color);
    border-top: 3px solid var(--theme-blue);
}

.nav-item:hover .nav-dropdown {
    display: flex;
}

.nav-dropdown a {
    padding: 0.65rem 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-dropdown a:hover {
    background-color: var(--badge-bg);
    color: var(--theme-blue);
}

/* Header */
.app-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.75rem;
    color: var(--theme-blue);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.header-subtitle {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Dashboard Container */
.dashboard-container {
    max-width: var(--container-max);
    margin: 3rem auto;
    padding: 0 2rem;
}

/* Grid Layout */
.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-wide {
    grid-column: 1 / -1;
}

.card-header {
    padding: 1.5rem 1.5rem 0.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.icon-wrapper.bg-blue { background-color: var(--theme-blue); }
.icon-wrapper.bg-green { background-color: var(--theme-green); }
.icon-wrapper.bg-orange { background-color: var(--theme-orange); }
.icon-wrapper.bg-purple { background-color: var(--theme-purple); }
.icon-wrapper.bg-teal { background-color: var(--theme-teal); }
.icon-wrapper.bg-red { background-color: var(--theme-red); }
.icon-wrapper.bg-indigo { background-color: var(--theme-indigo); }

.card-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-content {
    padding: 1rem 1.5rem 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

/* Link Lists */
.link-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.link-list.two-columns {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    column-gap: 2rem;
}

.link-list li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.link-list li a i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
    color: #94a3b8;
    transition: color 0.2s ease;
}

.link-list li a:hover {
    background-color: var(--badge-bg);
    color: var(--text-primary);
    transform: translateX(4px);
}

.link-list li a:hover i {
    color: var(--theme-blue);
}

/* Notes inside cards */
.card-note {
    margin-top: 1.5rem;
    padding: 0.75rem;
    background-color: #f8fafc;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.card-note i {
    margin-top: 0.15rem;
    color: var(--theme-blue);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    background-color: var(--badge-bg);
    color: var(--badge-text);
    margin-left: auto;
}

.badge.red { background-color: #fee2e2; color: #b91c1c; }
.badge.indigo { background-color: #e0e7ff; color: #4338ca; }

/* Top Buttons Section (No Box) */
.top-buttons-container {
    margin-bottom: 2.5rem;
    text-align: center;
}

.top-buttons-instruction {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.75rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

/* Action Banner */
.action-banner {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

.action-banner p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.button-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-success {
    background-color: #ecfdf5;
    color: var(--theme-green);
    border: 1px solid #a7f3d0;
}

.btn-success:hover {
    background-color: #d1fae5;
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--theme-blue);
    color: white;
}

.btn-primary:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
}

.copy-confirm {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--theme-green);
    min-height: 1.5rem;
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .link-list.two-columns {
        grid-template-columns: 1fr;
    }
}