/* ================================================
   LinkedLead Design System
   ================================================ */

/* ─── CSS Variables ────────────────────────────── */
:root {
    /* Brand */
    --primary: #6C5CE7;
    --primary-light: #A29BFE;
    --primary-dark: #5A4BD1;
    --primary-gradient: linear-gradient(135deg, #6C5CE7 0%, #A29BFE 100%);

    /* Accents */
    --accent: #00D2FF;
    --accent-gradient: linear-gradient(135deg, #6C5CE7 0%, #00D2FF 100%);

    /* Status */
    --success: #00B894;
    --success-bg: rgba(0, 184, 148, 0.12);
    --warning: #FDCB6E;
    --warning-bg: rgba(253, 203, 110, 0.12);
    --danger: #E17055;
    --danger-bg: rgba(225, 112, 85, 0.12);
    --info: #74B9FF;
    --info-bg: rgba(116, 185, 255, 0.12);

    /* Neutrals */
    --dark-900: #0F0F1A;
    --dark-800: #1A1A2E;
    --dark-750: #1F1F35;
    --dark-700: #25253E;
    --dark-600: #33335A;
    --dark-500: #44447A;
    --text-primary: #FFFFFF;
    --text-secondary: #B8B8D4;
    --text-muted: #6C6C8A;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow-primary: 0 8px 30px rgba(108, 92, 231, 0.3);
    --shadow-glow-accent: 0 8px 30px rgba(0, 210, 255, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;

    /* Sidebar */
    --sidebar-width: 260px;
    --topbar-height: 64px;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-900);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

img {
    max-width: 100%;
    display: block;
}

/* ─── Typography ───────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }

/* ─── Buttons ──────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-primary);
}

.btn-secondary {
    background: var(--dark-700);
    color: var(--text-primary);
    border: 1px solid var(--dark-600);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--dark-600);
    border-color: var(--dark-500);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover:not(:disabled) {
    background: #c0392b;
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--dark-700);
}

.btn-sm {
    padding: 0.4rem 0.9rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 0.9rem 2rem;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

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

/* ─── Form Elements ────────────────────────────── */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
}

.form-link {
    font-size: 0.8rem;
    color: var(--primary-light);
    text-decoration: none;
}

.form-link:hover {
    color: var(--primary);
    text-decoration: underline;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

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

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236C6C8A' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

/* ─── Alerts ───────────────────────────────────── */
.alert {
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
    border: 1px solid;
}

.alert-success {
    background: var(--success-bg);
    border-color: rgba(0, 184, 148, 0.25);
    color: var(--success);
}

.alert-danger {
    background: var(--danger-bg);
    border-color: rgba(225, 112, 85, 0.25);
    color: var(--danger);
}

.alert-warning {
    background: var(--warning-bg);
    border-color: rgba(253, 203, 110, 0.25);
    color: var(--warning);
}

.alert-info {
    background: var(--info-bg);
    border-color: rgba(116, 185, 255, 0.25);
    color: var(--info);
}

/* ─── Cards ────────────────────────────────────── */
.card {
    background: var(--dark-800);
    border: 1px solid var(--dark-600);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--dark-500);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--dark-600);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
}

/* ─── Stats Cards ──────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--dark-800);
    border: 1px solid var(--dark-600);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    opacity: 0.08;
    transform: translate(20px, -20px);
}

.stat-card.stat-primary::after { background: var(--primary); }
.stat-card.stat-success::after { background: var(--success); }
.stat-card.stat-info::after { background: var(--info); }
.stat-card.stat-warning::after { background: var(--warning); }

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.stat-change {
    font-size: 0.78rem;
    margin-top: 0.4rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* ─── Tables ───────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--dark-600);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table thead th {
    background: var(--dark-750);
    padding: 0.85rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--dark-600);
    white-space: nowrap;
}

.table tbody td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--dark-700);
    color: var(--text-primary);
    vertical-align: middle;
}

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

.table tbody tr:hover {
    background: var(--dark-750);
}

.table .user-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.table .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.table .user-info {
    min-width: 0;
}

.table .user-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.table .user-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ─── Badges ───────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.7rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

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

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

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

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

.badge-primary {
    background: rgba(108, 92, 231, 0.15);
    color: var(--primary-light);
}

.badge-muted {
    background: rgba(108, 108, 138, 0.15);
    color: var(--text-muted);
}

/* ─── Pagination ───────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    margin-top: 1.5rem;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--dark-700);
    color: var(--text-primary);
}

.pagination .active {
    background: var(--primary);
    color: #fff;
}

.pagination .disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ─── Empty States ─────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: var(--dark-700);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

/* ─── Toggle Switch ────────────────────────────── */
.toggle {
    position: relative;
    width: 44px;
    height: 24px;
    cursor: pointer;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--dark-600);
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 3px;
    top: 3px;
    background: #fff;
    border-radius: 50%;
    transition: var(--transition-normal);
}

.toggle input:checked + .toggle-slider {
    background: var(--primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

/* ─── Utilities ────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.ml-auto { margin-left: auto; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.78rem; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hidden { display: none !important; }

/* ─── Responsive ───────────────────────────────── */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .hidden-mobile {
        display: none !important;
    }
}

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