/* Premium EdTech CRM Design System */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    /* Color Palette - Indigo, Mint, Slate */
    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Light Theme (Default) */
    --bg-app: #f4f6f9;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-sidebar: #0f172a;
    --bg-sidebar-hover: #1e293b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-sidebar: #94a3b8;
    --text-sidebar-active: #ffffff;
    --accent: #4f46e5; /* Royal Indigo */
    --accent-hover: #4338ca;
    --success: #0d9488; /* Mint Teal */
    --warning: #d97706; /* Amber */
    --danger: #e11d48; /* Coral Red */
    --border: #e2e8f0;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    --sidebar-width: 260px;
    --glass-blur: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Dark Theme Override */
    --bg-app: #090d16;
    --bg-card: rgba(17, 24, 39, 0.8);
    --bg-sidebar: #0b0f19;
    --bg-sidebar-hover: #1f2937;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-sidebar: #9ca3af;
    --text-sidebar-active: #ffffff;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --border: #1f2937;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* Reset and Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-app);
    color: var(--text-primary);
    overflow-x: hidden;
    transition: var(--transition);
}

a {
    color: inherit;
    text-decoration: none;
}

button, input, select, textarea {
    font-family: inherit;
}

/* Core Layout Shell */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar navigation */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    color: var(--text-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-logo {
    font-weight: 700;
    font-size: 20px;
    color: #ffffff;
    letter-spacing: 0.5px;
}

.sidebar-logo span {
    color: var(--accent);
}

.sidebar-menu {
    list-style: none;
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-grow: 1;
    overflow-y: auto;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.sidebar-menu::-webkit-scrollbar {
    display: none; /* Chrome, Safari and Opera */
}

.sidebar-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
}

.sidebar-item a:hover {
    background-color: var(--bg-sidebar-hover);
    color: #ffffff;
}

.sidebar-item.active a {
    background-color: var(--accent);
    color: var(--text-sidebar-active);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--success));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 600;
    font-size: 14px;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
}

.user-role {
    font-size: 11px;
    color: #94a3b8;
    text-transform: capitalize;
}

/* Main Content Workspace */
.main-wrapper {
    margin-left: var(--sidebar-width);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    height: 70px;
    background-color: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 90;
    transition: var(--transition);
}

.page-title {
    font-size: 20px;
    font-weight: 700;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-toggle, .notifications-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover, .notifications-btn:hover {
    background-color: var(--border);
    color: var(--text-primary);
}

.content-body {
    padding: 32px;
    flex-grow: 1;
}

/* Cards & Glassmorphism widgets */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.crm-card {
    background-color: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.crm-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--accent);
}

.crm-card.success::before { background-color: var(--success); }
.crm-card.warning::before { background-color: var(--warning); }
.crm-card.danger::before { background-color: var(--danger); }

.card-title {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 12px;
}

.card-value {
    font-size: 28px;
    font-weight: 700;
}

.card-trend {
    margin-top: 8px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
}

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

/* Forms & Inputs styling */
.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    background-color: var(--bg-app);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* Beautiful custom buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

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

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

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

.btn-secondary:hover {
    background-color: #cbd5e1;
}

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

.btn-success:hover {
    background-color: #0b7a70;
}

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

.btn-danger:hover {
    background-color: #c9173c;
}

/* Custom Table Layout */
.table-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 32px;
}

.crm-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.crm-table th {
    background-color: rgba(0, 0, 0, 0.02);
    padding: 16px 24px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.crm-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

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

.crm-table tbody tr:hover {
    background-color: rgba(79, 70, 229, 0.02);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    text-transform: capitalize;
}

.badge-info { background-color: rgba(79, 70, 229, 0.1); color: var(--accent); }
.badge-success { background-color: rgba(13, 148, 136, 0.1); color: var(--success); }
.badge-warning { background-color: rgba(217, 119, 6, 0.1); color: var(--warning); }
.badge-danger { background-color: rgba(225, 29, 72, 0.1); color: var(--danger); }

/* Interactive Kanban Board for Deals */
.kanban-board {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 16px;
    min-height: 500px;
}

.kanban-column {
    flex: 0 0 280px;
    background-color: rgba(0, 0, 0, 0.015);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.kanban-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    font-size: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border);
}

.kanban-card-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
    flex-grow: 1;
}

.kanban-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    box-shadow: var(--shadow);
    cursor: grab;
    transition: var(--transition);
}

.kanban-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.kanban-card-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 6px;
}

.kanban-card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.kanban-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    font-size: 11px;
    color: var(--text-secondary);
}

/* Authenticated Portal / Login Form */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.login-logo span {
    color: var(--accent);
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.crm-modal {
    width: 100%;
    max-width: 500px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95);
    transition: var(--transition);
}

.modal-backdrop.active .crm-modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary);
}

/* Verification Certificate Layout */
.certificate-frame {
    border: 10px solid var(--bg-sidebar);
    padding: 40px;
    background: #ffffff;
    color: #000000;
    max-width: 800px;
    margin: 40px auto;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.cert-logo {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
}

.cert-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    color: var(--accent);
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.cert-text {
    text-align: center;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 32px;
}

.cert-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    font-size: 14px;
}

/* Simulator Outbound Logs Interface */
.simulator-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-top: 32px;
}

.simulator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

.sim-log-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 300px;
    overflow-y: auto;
}

.sim-log-item {
    background-color: var(--bg-app);
    border-left: 4px solid var(--accent);
    padding: 12px 16px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sim-log-item.whatsapp { border-left-color: var(--success); }
.sim-log-item.email { border-left-color: var(--accent); }

.sim-log-meta {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--text-secondary);
}

.sim-log-body {
    font-size: 13px;
    font-family: monospace;
    white-space: pre-wrap;
    background: rgba(0, 0, 0, 0.03);
    padding: 6px 10px;
    border-radius: 4px;
}

/* UI Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border);
    transition: .3s;
    border-radius: 24px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

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

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

/* Pagination Styles */
.pagination {
    display: flex;
    padding-left: 0;
    list-style: none;
    justify-content: center;
    margin-top: 20px;
}
.page-item {
    margin: 0 2px;
}
.page-link {
    position: relative;
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--primary);
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 13px;
    font-weight: 500;
}
.page-link:hover {
    background-color: var(--primary);
    color: #fff;
}
.page-item.active .page-link {
    background-color: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.page-item.disabled .page-link {
    color: var(--text-secondary);
    pointer-events: none;
    background-color: var(--bg-app);
    border-color: var(--border);
}



/* Bootstrap Pagination Utilities */
.d-flex { display: flex; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.d-none { display: none; }
@media (min-width: 576px) {
  .d-sm-flex { display: flex; }
  .d-sm-none { display: none; }
  .align-items-sm-center { align-items: center; }
  .justify-content-sm-between { justify-content: space-between; }
  .flex-sm-fill { flex: 1 1 auto; }
}
.small { font-size: 13px; }
.text-muted { color: var(--text-secondary); }
.fw-semibold { font-weight: 600; }