/* ============================================================
   CursosAvila — Components CSS
   ============================================================ */

/* ── Buttons ── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
    padding: 10px 20px; font-size: var(--text-sm); font-weight: var(--font-medium);
    border-radius: var(--radius-md); transition: all var(--transition-base);
    white-space: nowrap; position: relative; overflow: hidden;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary { background: var(--gradient-primary); color: white; box-shadow: 0 2px 12px rgba(108,99,255,0.3); }
.btn-primary:hover { box-shadow: 0 4px 20px rgba(108,99,255,0.45); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-surface); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--bg-surface-hover); border-color: var(--border-hover); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: var(--accent-dark); }
.btn-ghost { color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-surface); }
.btn-sm { padding: 6px 14px; font-size: var(--text-xs); }
.btn-lg { padding: 14px 28px; font-size: var(--text-md); }
.btn-icon { padding: 8px; border-radius: var(--radius-md); }
.btn:disabled, .btn.loading { opacity: 0.6; pointer-events: none; }
.btn.loading::after { content: ''; width: 16px; height: 16px; border: 2px solid transparent; border-top-color: currentColor; border-radius: 50%; animation: spin 0.6s linear infinite; }

/* ── Form Controls ── */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label { font-size: var(--text-sm); font-weight: var(--font-medium); color: var(--text-secondary); }
.form-label .required { color: var(--danger); margin-left: 2px; }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 10px 14px; background: var(--bg-surface); color: var(--text-primary);
    border: 1px solid var(--border-color); border-radius: var(--radius-md);
    transition: all var(--transition-fast); font-size: var(--text-base);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-alpha); background: var(--bg-surface-hover); }
.form-input.error { border-color: var(--danger); }
.form-hint { font-size: var(--text-xs); color: var(--text-tertiary); }
.form-error { font-size: var(--text-xs); color: var(--danger); display: none; }
.form-group.has-error .form-error { display: block; }
.form-group.has-error .form-input { border-color: var(--danger); }
.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='%238888AA' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.form-textarea { min-height: 80px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-4); }
.input-with-icon { position: relative; }
.input-with-icon .form-input { padding-left: 40px; }
.input-with-icon .input-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-tertiary); }
.input-with-icon .input-icon svg { width: 18px; height: 18px; }

/* ── Cards ── */
.card {
    background: var(--glass-bg); backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border); border-radius: var(--radius-lg);
    padding: var(--space-6); transition: all var(--transition-base);
}
.card:hover { border-color: var(--border-hover); }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-5); }
.card-title { font-size: var(--text-md); font-weight: var(--font-semibold); }

/* ── KPI Cards ── */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--space-5); }
.kpi-card { padding: var(--space-5); position: relative; overflow: hidden; }
.kpi-card::before { content: ''; position: absolute; top: 0; right: 0; width: 80px; height: 80px; border-radius: 50%; opacity: 0.08; transform: translate(20%, -20%); }
.kpi-card[data-color="primary"]::before { background: var(--primary); }
.kpi-card[data-color="success"]::before { background: var(--success); }
.kpi-card[data-color="warning"]::before { background: var(--warning); }
.kpi-card[data-color="accent"]::before { background: var(--accent); }
.kpi-icon { width: 44px; height: 44px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-4); }
.kpi-icon svg { width: 22px; height: 22px; }
.kpi-card[data-color="primary"] .kpi-icon { background: var(--primary-alpha); color: var(--primary); }
.kpi-card[data-color="success"] .kpi-icon { background: var(--success-bg); color: var(--success); }
.kpi-card[data-color="warning"] .kpi-icon { background: var(--warning-bg); color: var(--warning); }
.kpi-card[data-color="accent"] .kpi-icon { background: var(--danger-bg); color: var(--accent); }
.kpi-value { font-size: var(--text-2xl); font-weight: var(--font-bold); margin-bottom: var(--space-1); }
.kpi-label { font-size: var(--text-sm); color: var(--text-secondary); }

/* ── Badges ── */
.badge {
    display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px;
    font-size: var(--text-xs); font-weight: var(--font-medium); border-radius: var(--radius-full);
}
.badge-lead { background: var(--warning-bg); color: var(--warning); }
.badge-matriculado { background: var(--success-bg); color: var(--success); }
.badge-desistente { background: var(--danger-bg); color: var(--danger); }
.badge-concluido { background: var(--info-bg); color: var(--info); }
.badge-admin { background: var(--primary-alpha); color: var(--primary); }
.badge-atendente { background: var(--success-bg); color: var(--success); }

/* ── Data Table ── */
.data-table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border-color); }
.data-table { width: 100%; }
.data-table thead { background: var(--bg-surface); }
.data-table th { padding: 12px 16px; text-align: left; font-size: var(--text-xs); font-weight: var(--font-semibold); color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--border-color); white-space: nowrap; }
.data-table td { padding: 12px 16px; font-size: var(--text-sm); border-bottom: 1px solid var(--border-color); vertical-align: middle; }
.data-table tbody tr { transition: background var(--transition-fast); }
.data-table tbody tr:hover { background: var(--bg-surface-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }
.table-actions { display: flex; gap: var(--space-1); }
.table-empty { text-align: center; padding: var(--space-12) !important; color: var(--text-tertiary); }
.table-empty svg { width: 48px; height: 48px; margin: 0 auto var(--space-4); opacity: 0.3; }

/* ── Pagination ── */
.pagination { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4); flex-wrap: wrap; gap: var(--space-3); }
.pagination-info { font-size: var(--text-sm); color: var(--text-secondary); }
.pagination-buttons { display: flex; gap: var(--space-1); }
.pagination-btn { padding: 6px 12px; font-size: var(--text-sm); border-radius: var(--radius-sm); background: var(--bg-surface); border: 1px solid var(--border-color); color: var(--text-secondary); transition: all var(--transition-fast); }
.pagination-btn:hover:not(:disabled) { background: var(--bg-surface-hover); color: var(--text-primary); }
.pagination-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.pagination-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Modal ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); z-index: var(--z-modal-overlay); display: none; align-items: center; justify-content: center; padding: var(--space-4); }
.modal-overlay.active { display: flex; }
.modal { background: var(--bg-elevated); border: 1px solid var(--border-color); border-radius: var(--radius-xl); width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; animation: scaleIn 0.25s ease; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--border-color); }
.modal-title { font-size: var(--text-lg); font-weight: var(--font-semibold); }
.modal-close { padding: 4px; border-radius: var(--radius-sm); color: var(--text-secondary); transition: all var(--transition-fast); }
.modal-close:hover { background: var(--bg-surface); color: var(--text-primary); }
.modal-body { padding: var(--space-6); }
.modal-footer { display: flex; justify-content: flex-end; gap: var(--space-3); padding: var(--space-4) var(--space-6); border-top: 1px solid var(--border-color); }

/* ── Toast ── */
.toast-container { position: fixed; top: var(--space-4); right: var(--space-4); z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--space-3); pointer-events: none; }
.toast { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-5); background: var(--bg-elevated); border: 1px solid var(--border-color); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); animation: slideInRight 0.3s ease; pointer-events: auto; min-width: 280px; max-width: 420px; }
.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-info { border-left: 3px solid var(--info); }
.toast-icon { flex-shrink: 0; }
.toast-message { flex: 1; font-size: var(--text-sm); }
.toast-close { flex-shrink: 0; padding: 2px; color: var(--text-tertiary); cursor: pointer; }

@keyframes slideInRight { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }

/* ── Sidebar ── */
.sidebar {
    position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
    background: var(--bg-secondary); border-right: 1px solid var(--border-color);
    display: flex; flex-direction: column; z-index: var(--z-sidebar);
    transition: width var(--transition-base);
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }
.sidebar-header { padding: var(--space-5) var(--space-5); display: flex; align-items: center; gap: var(--space-3); border-bottom: 1px solid var(--border-color); min-height: var(--header-height); }
.sidebar-logo { width: 40px; height: 40px; background: var(--gradient-primary); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; flex-shrink: 0; box-shadow: var(--shadow-glow); }
.sidebar-logo svg { width: 22px; height: 22px; color: white; }
.sidebar-brand { overflow: hidden; white-space: nowrap; transition: opacity var(--transition-fast); }
.sidebar-brand h2 { font-size: var(--text-md); background: var(--gradient-header); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.sidebar-brand span { font-size: var(--text-xs); color: var(--text-tertiary); }
.sidebar.collapsed .sidebar-brand { opacity: 0; width: 0; }

.sidebar-nav { flex: 1; padding: var(--space-3); overflow-y: auto; }
.sidebar-section { margin-bottom: var(--space-4); }
.sidebar-section-title { font-size: var(--text-xs); font-weight: var(--font-semibold); color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.08em; padding: var(--space-2) var(--space-3); margin-bottom: var(--space-1); }
.sidebar.collapsed .sidebar-section-title { display: none; }

.nav-item {
    display: flex; align-items: center; gap: var(--space-3); padding: 10px 14px;
    border-radius: var(--radius-md); color: var(--text-secondary); cursor: pointer;
    transition: all var(--transition-fast); margin-bottom: 2px; text-decoration: none;
}
.nav-item:hover { background: var(--bg-surface); color: var(--text-primary); }
.nav-item.active { background: var(--primary-alpha); color: var(--primary); }
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
.nav-item span { white-space: nowrap; overflow: hidden; transition: opacity var(--transition-fast); }
.sidebar.collapsed .nav-item span { opacity: 0; width: 0; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 10px; }

.sidebar-footer { padding: var(--space-4); border-top: 1px solid var(--border-color); }
.sidebar-user { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2); }
.sidebar-avatar { width: 36px; height: 36px; border-radius: var(--radius-full); background: var(--gradient-accent); display: flex; align-items: center; justify-content: center; font-size: var(--text-sm); font-weight: var(--font-bold); color: white; flex-shrink: 0; }
.sidebar-user-info { overflow: hidden; }
.sidebar-user-name { font-size: var(--text-sm); font-weight: var(--font-medium); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-role { font-size: var(--text-xs); color: var(--text-tertiary); }
.sidebar.collapsed .sidebar-user-info { display: none; }

.sidebar-toggle { width: 100%; padding: var(--space-2); display: flex; align-items: center; justify-content: center; color: var(--text-tertiary); border-radius: var(--radius-md); margin-top: var(--space-2); }
.sidebar-toggle:hover { background: var(--bg-surface); color: var(--text-primary); }

/* ── Header ── */
.app-header {
    height: var(--header-height); background: var(--bg-secondary); border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between; padding: 0 var(--space-6);
    position: sticky; top: 0; z-index: var(--z-header);
}
.header-left { display: flex; align-items: center; gap: var(--space-4); }
.header-breadcrumb { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); color: var(--text-secondary); }
.header-breadcrumb .separator { color: var(--text-tertiary); }
.header-right { display: flex; align-items: center; gap: var(--space-3); }
.mobile-menu-btn { display: none; padding: var(--space-2); border-radius: var(--radius-md); color: var(--text-secondary); }

/* ── Filters Bar ── */
.filters-bar { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-6); }
.filters-bar .form-input, .filters-bar .form-select { max-width: 200px; padding: 8px 12px; font-size: var(--text-sm); }
.search-input { max-width: 300px !important; }

/* ── Stepper ── */
.stepper { display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-8); gap: var(--space-2); }
.stepper-step { display: flex; align-items: center; gap: var(--space-2); }
.stepper-circle { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: var(--text-sm); font-weight: var(--font-semibold); background: var(--bg-surface); color: var(--text-tertiary); border: 2px solid var(--border-color); transition: all var(--transition-base); }
.stepper-step.active .stepper-circle { background: var(--primary); color: white; border-color: var(--primary); box-shadow: 0 0 12px rgba(108,99,255,0.3); }
.stepper-step.completed .stepper-circle { background: var(--success); color: white; border-color: var(--success); }
.stepper-label { font-size: var(--text-sm); color: var(--text-tertiary); }
.stepper-step.active .stepper-label { color: var(--text-primary); font-weight: var(--font-medium); }
.stepper-step.completed .stepper-label { color: var(--success); }
.stepper-line { width: 40px; height: 2px; background: var(--border-color); }
.stepper-step.completed + .stepper-line { background: var(--success); }
.step-content { display: none; animation: fadeIn 0.3s ease; }
.step-content.active { display: block; }

/* ── Login Page ── */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.login-page::before { content: ''; position: absolute; inset: -50%; background: radial-gradient(circle at 30% 30%, rgba(108,99,255,0.08) 0%, transparent 50%), radial-gradient(circle at 70% 70%, rgba(255,101,132,0.06) 0%, transparent 50%); animation: float 20s ease-in-out infinite; }
.login-card { position: relative; width: 100%; max-width: 420px; padding: var(--space-10); background: var(--glass-bg); backdrop-filter: var(--glass-blur); border: 1px solid var(--glass-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); animation: scaleIn 0.5s ease; margin: var(--space-4); }
.login-logo { text-align: center; margin-bottom: var(--space-8); }
.login-logo-icon { width: 72px; height: 72px; margin: 0 auto var(--space-4); background: var(--gradient-primary); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-glow); }
.login-logo-icon svg { width: 36px; height: 36px; color: white; }
.login-logo h1 { font-size: var(--text-2xl); background: var(--gradient-header); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.login-logo p { font-size: var(--text-sm); color: var(--text-secondary); margin-top: var(--space-1); }
.login-form { display: flex; flex-direction: column; gap: var(--space-5); }
.login-error { padding: var(--space-3) var(--space-4); background: var(--danger-bg); border: 1px solid rgba(255,61,113,0.2); border-radius: var(--radius-md); color: var(--danger); font-size: var(--text-sm); display: none; align-items: center; gap: var(--space-2); }
.login-error.show { display: flex; }

/* ── Charts Grid ── */
.charts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.chart-card { min-height: 320px; }
.chart-container { position: relative; height: 260px; }

/* ── Audit Timeline ── */
.audit-timeline { display: flex; flex-direction: column; gap: var(--space-3); }
.audit-item { display: flex; gap: var(--space-4); padding: var(--space-4); background: var(--bg-surface); border-radius: var(--radius-md); border: 1px solid var(--border-color); }
.audit-icon { width: 36px; height: 36px; border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.audit-icon.insert { background: var(--success-bg); color: var(--success); }
.audit-icon.update { background: var(--warning-bg); color: var(--warning); }
.audit-icon.delete { background: var(--danger-bg); color: var(--danger); }
.audit-content { flex: 1; }
.audit-title { font-size: var(--text-sm); font-weight: var(--font-medium); margin-bottom: var(--space-1); }
.audit-meta { font-size: var(--text-xs); color: var(--text-tertiary); display: flex; gap: var(--space-3); }
.audit-diff { margin-top: var(--space-2); padding: var(--space-3); background: var(--bg-primary); border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: var(--text-xs); max-height: 120px; overflow-y: auto; }