/**
 * Konfidi Billing - Admin Design System & Styles
 * Modern, executive desktop/mobile billing interface
 */

:root {
    --kb-primary: #2563eb;
    --kb-primary-hover: #1d4ed8;
    --kb-primary-light: #eff6ff;
    --kb-success: #16a34a;
    --kb-success-light: #f0fdf4;
    --kb-warning: #d97706;
    --kb-warning-light: #fffbeb;
    --kb-danger: #dc2626;
    --kb-danger-light: #fef2f2;
    --kb-slate-50: #f8fafc;
    --kb-slate-100: #f1f5f9;
    --kb-slate-200: #e2e8f0;
    --kb-slate-300: #cbd5e1;
    --kb-slate-400: #94a3b8;
    --kb-slate-500: #64748b;
    --kb-slate-600: #475569;
    --kb-slate-700: #334155;
    --kb-slate-800: #1e293b;
    --kb-slate-900: #0f172a;
    --kb-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --kb-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --kb-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --kb-radius: 8px;
    --kb-radius-lg: 12px;
}

/* Base Wrapper */
.konfidi-wrap {
    margin: 20px 20px 40px 2px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: var(--kb-slate-800);
}

.konfidi-wrap * {
    box-sizing: border-box;
}

/* Header & Navigation */
.konfidi-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #ffffff;
    padding: 18px 24px;
    border-radius: var(--kb-radius-lg);
    box-shadow: var(--kb-shadow-sm);
    border: 1px solid var(--kb-slate-200);
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.konfidi-title-area {
    display: flex;
    align-items: center;
    gap: 14px;
}

.konfidi-badge {
    background: var(--kb-primary-light);
    color: var(--kb-primary);
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: 9999px;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.konfidi-header h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    color: var(--kb-slate-900);
    line-height: 1.2;
}

.konfidi-header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* Button System */
.kb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 16px;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.4;
    border-radius: var(--kb-radius);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease-in-out;
    border: 1px solid transparent;
}

.kb-btn:focus {
    outline: 2px solid var(--kb-primary);
    outline-offset: 2px;
}

.kb-btn-primary {
    background-color: var(--kb-primary);
    color: #ffffff !important;
    border-color: var(--kb-primary);
}

.kb-btn-primary:hover {
    background-color: var(--kb-primary-hover);
    color: #ffffff !important;
}

.kb-btn-secondary {
    background-color: #ffffff;
    color: var(--kb-slate-700) !important;
    border-color: var(--kb-slate-300);
}

.kb-btn-secondary:hover {
    background-color: var(--kb-slate-50);
    border-color: var(--kb-slate-400);
    color: var(--kb-slate-900) !important;
}

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

.kb-btn-success:hover {
    background-color: #15803d;
}

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

.kb-btn-danger:hover {
    background-color: #b91c1c;
}

.kb-btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.kb-btn-lg {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 700;
}

/* Dashboard Metric Cards */
.konfidi-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.konfidi-stat-card {
    background: #ffffff;
    border: 1px solid var(--kb-slate-200);
    border-radius: var(--kb-radius-lg);
    padding: 20px;
    box-shadow: var(--kb-shadow-sm);
    position: relative;
    overflow: hidden;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.konfidi-stat-card:hover {
    box-shadow: var(--kb-shadow);
}

.konfidi-stat-card.card-blue {
    border-top: 4px solid var(--kb-primary);
}

.konfidi-stat-card.card-green {
    border-top: 4px solid var(--kb-success);
}

.konfidi-stat-card.card-amber {
    border-top: 4px solid var(--kb-warning);
}

.konfidi-stat-card.card-red {
    border-top: 4px solid var(--kb-danger);
}

.stat-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--kb-slate-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--kb-slate-900);
    line-height: 1.1;
    margin-bottom: 6px;
}

.stat-desc {
    font-size: 12px;
    color: var(--kb-slate-400);
}

/* Card Containers */
.konfidi-card {
    background: #ffffff;
    border: 1px solid var(--kb-slate-200);
    border-radius: var(--kb-radius-lg);
    box-shadow: var(--kb-shadow-sm);
    margin-bottom: 24px;
    overflow: hidden;
}

.konfidi-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--kb-slate-200);
    background-color: #ffffff;
    flex-wrap: wrap;
    gap: 12px;
}

.konfidi-card-header h2 {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--kb-slate-800);
}

.konfidi-card-body {
    padding: 20px;
}

/* Filters Bar */
.konfidi-filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background-color: var(--kb-slate-50);
    border-bottom: 1px solid var(--kb-slate-200);
}

.konfidi-filter-bar input[type="text"],
.konfidi-filter-bar input[type="date"],
.konfidi-filter-bar select {
    height: 38px;
    padding: 6px 12px;
    border: 1px solid var(--kb-slate-300);
    border-radius: var(--kb-radius);
    background: #ffffff;
    font-size: 13px;
    color: var(--kb-slate-800);
}

.konfidi-filter-bar input[type="text"]:focus,
.konfidi-filter-bar select:focus {
    border-color: var(--kb-primary);
    box-shadow: 0 0 0 1px var(--kb-primary);
    outline: none;
}

/* Modern Data Table */
.konfidi-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

.konfidi-table th {
    background-color: var(--kb-slate-100);
    color: var(--kb-slate-700);
    font-weight: 600;
    padding: 12px 14px;
    border-bottom: 1px solid var(--kb-slate-200);
    white-space: nowrap;
}

.konfidi-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--kb-slate-200);
    color: var(--kb-slate-700);
    vertical-align: middle;
}

.konfidi-table tbody tr:hover {
    background-color: var(--kb-slate-50);
}

.konfidi-table .col-right {
    text-align: right;
}

.konfidi-table .col-center {
    text-align: center;
}

/* Status Pills */
.status-pill {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-pill.status-active,
.status-pill.status-paid {
    background: var(--kb-success-light);
    color: var(--kb-success);
    border: 1px solid rgba(22, 163, 74, 0.2);
}

.status-pill.status-partial {
    background: var(--kb-warning-light);
    color: var(--kb-warning);
    border: 1px solid rgba(217, 119, 6, 0.2);
}

.status-pill.status-unpaid,
.status-pill.status-inactive,
.status-pill.status-void {
    background: var(--kb-danger-light);
    color: var(--kb-danger);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

/* Modal Dialogs */
.kb-modal {
    display: none;
    position: fixed;
    z-index: 100000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(2px);
    overflow-y: auto;
    padding: 20px;
}

.kb-modal.is-active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.kb-modal-content {
    background: #ffffff;
    border-radius: var(--kb-radius-lg);
    box-shadow: var(--kb-shadow-lg);
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: kbModalSlideIn 0.2s ease-out;
}

.kb-modal-content.modal-lg {
    max-width: 900px;
}

@keyframes kbModalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.kb-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    border-bottom: 1px solid var(--kb-slate-200);
}

.kb-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--kb-slate-900);
}

.kb-modal-close {
    background: transparent;
    border: none;
    font-size: 24px;
    line-height: 1;
    color: var(--kb-slate-400);
    cursor: pointer;
    padding: 4px;
}

.kb-modal-close:hover {
    color: var(--kb-slate-800);
}

.kb-modal-body {
    padding: 24px;
    overflow-y: auto;
}

.kb-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--kb-slate-200);
    background-color: var(--kb-slate-50);
}

/* Form Controls */
.kb-form-group {
    margin-bottom: 16px;
}

.kb-form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--kb-slate-700);
    margin-bottom: 6px;
}

.kb-form-group input[type="text"],
.kb-form-group input[type="number"],
.kb-form-group input[type="email"],
.kb-form-group input[type="date"],
.kb-form-group select,
.kb-form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--kb-slate-300);
    border-radius: var(--kb-radius);
    font-size: 14px;
    color: var(--kb-slate-800);
    transition: border-color 0.15s ease;
}

.kb-form-group input:focus,
.kb-form-group select:focus,
.kb-form-group textarea:focus {
    border-color: var(--kb-primary);
    box-shadow: 0 0 0 1px var(--kb-primary);
    outline: none;
}

.kb-form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Notifications / Toast */
.kb-toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.kb-toast {
    background: var(--kb-slate-900);
    color: #ffffff;
    padding: 12px 20px;
    border-radius: var(--kb-radius);
    box-shadow: var(--kb-shadow-lg);
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: kbToastIn 0.2s ease-out;
}

.kb-toast.toast-success {
    background: var(--kb-success);
}

.kb-toast.toast-error {
    background: var(--kb-danger);
}

@keyframes kbToastIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}