/* VendorBooks Platform - SaaS Custom Styles */

/* ========================================
   1. CSS VARIABLES & COLOR PALETTE
   ======================================== */
:root {
    /* Primary Colors */
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;

    /* Secondary Colors */
    --secondary: #3b82f6;
    --secondary-dark: #2563eb;
    --secondary-light: #60a5fa;

    /* Accent Colors */
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;

    /* Status Colors */
    --success: #10b981;
    --success-dark: #059669;
    --success-light: #34d399;

    --warning: #f59e0b;
    --warning-dark: #d97706;
    --warning-light: #fbbf24;

    --danger: #ef4444;
    --danger-dark: #dc2626;
    --danger-light: #f87171;

    --info: #3b82f6;
    --info-dark: #2563eb;
    --info-light: #60a5fa;

    /* Neutral Colors */
    --dark: #1f2937;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --light: #f9fafb;
    --white: #ffffff;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* ========================================
   2. GLOBAL STYLES
   ======================================== */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

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

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

/* ========================================
   3. CARD COMPONENTS
   ======================================== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-header {
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--gray-800);
}

.card-body {
    padding: var(--spacing-md) 0;
}

.card-footer {
    border-top: 1px solid var(--gray-200);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* Metric Cards */
.metric-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.metric-card:hover {
    transform: translateY(-6px);
}

.metric-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.metric-label {
    font-size: 0.875rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-change {
    font-size: 0.75rem;
    margin-top: var(--spacing-sm);
    opacity: 0.8;
}

/* ========================================
   4. BUTTONS
   ======================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    line-height: 1.5;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
}

.btn-primary:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
}

.btn-secondary:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

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

.btn-success:hover:not(:disabled) {
    background: var(--success-dark);
    transform: scale(1.05);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger-dark);
    transform: scale(1.05);
}

.btn-warning {
    background: var(--warning);
    color: var(--white);
}

.btn-warning:hover:not(:disabled) {
    background: var(--warning-dark);
    transform: scale(1.05);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary);
    color: var(--white);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* ========================================
   5. STATUS BADGES
   ======================================== */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    line-height: 1;
}

.badge-active {
    background: var(--success-light);
    color: var(--success-dark);
}

.badge-expired {
    background: var(--danger-light);
    color: var(--danger-dark);
}

.badge-pending {
    background: var(--warning-light);
    color: var(--warning-dark);
}

.badge-suspended {
    background: var(--gray-300);
    color: var(--gray-700);
}

.badge-inactive {
    background: var(--gray-300);
    color: var(--gray-700);
}

/* ========================================
   6. ALERTS
   ======================================== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-success {
    background: var(--success-light);
    border-color: var(--success);
    color: var(--success-dark);
}

.alert-warning {
    background: var(--warning-light);
    border-color: var(--warning);
    color: var(--warning-dark);
}

.alert-danger {
    background: var(--danger-light);
    border-color: var(--danger);
    color: var(--danger-dark);
}

.alert-info {
    background: var(--info-light);
    border-color: var(--info);
    color: var(--info-dark);
}

/* ========================================
   7. FORMS
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-control:disabled {
    background: var(--gray-100);
    cursor: not-allowed;
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    cursor: pointer;
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
    user-select: none;
}

/* ========================================
   8. TABLES
   ======================================== */
.data-table {
    width: 100%;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.data-table thead {
    background: var(--gray-100);
}

.data-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.data-table td {
    padding: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
}

.data-table tbody tr:hover {
    background: var(--gray-50);
}

.data-table tbody tr:nth-child(even) {
    background: var(--gray-50);
}

.data-table tbody tr:nth-child(even):hover {
    background: var(--gray-100);
}

/* ========================================
   9. DASHBOARD LAYOUT
   ======================================== */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    position: fixed;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-y: hidden;
    z-index: 1000;
}

.sidebar-nav::-webkit-scrollbar {
    width: 6px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background-color: var(--gray-300);
    border-radius: 10px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
    background-color: var(--gray-400);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    flex-shrink: 0;
}

.sidebar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.sidebar-nav {
    flex: 1;
    min-height: 0;
    /* Critical: allows flex child to shrink below content size so footer stays pinned */
    overflow-y: auto;
    padding: var(--spacing-md) 0;
    scrollbar-width: thin;
    scrollbar-color: var(--gray-300) transparent;
    scroll-behavior: smooth;
}

.sidebar-nav-item {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--gray-700);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.sidebar-nav-item:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.sidebar-nav-item.active {
    background: var(--primary);
    color: var(--white);
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    width: 100%;
    flex-shrink: 0;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    flex: 1;
    background: var(--gray-50);
}

/* Top Bar */
.topbar {
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.topbar-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Content Area */
.content-area {
    padding: var(--spacing-xl);
}

/* ========================================
   10. GRID SYSTEM
   ======================================== */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.75rem;
}

.col {
    flex: 1;
    padding: 0 0.75rem;
}

.col-1 {
    flex: 0 0 8.333%;
    max-width: 8.333%;
}

.col-2 {
    flex: 0 0 16.666%;
    max-width: 16.666%;
}

.col-3 {
    flex: 0 0 25%;
    max-width: 25%;
}

.col-4 {
    flex: 0 0 33.333%;
    max-width: 33.333%;
}

.col-6 {
    flex: 0 0 50%;
    max-width: 50%;
}

.col-8 {
    flex: 0 0 66.666%;
    max-width: 66.666%;
}

.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
}

/* ========================================
   11. UTILITIES
   ======================================== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.p-0 {
    padding: 0;
}

.p-1 {
    padding: var(--spacing-sm);
}

.p-2 {
    padding: var(--spacing-md);
}

.p-3 {
    padding: var(--spacing-lg);
}

.p-4 {
    padding: var(--spacing-xl);
}

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-flex {
    display: flex;
}

.d-inline-block {
    display: inline-block;
}

.justify-content-between {
    justify-content: space-between;
}

.justify-content-center {
    justify-content: center;
}

.align-items-center {
    align-items: center;
}

.gap-1 {
    gap: var(--spacing-sm);
}

.gap-2 {
    gap: var(--spacing-md);
}

.gap-3 {
    gap: var(--spacing-lg);
}

/* ========================================
   12. RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1199px) {
    .col-md-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }

    .col-md-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

@media (max-width: 767px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .col-sm-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .topbar {
        padding: var(--spacing-md);
    }

    .content-area {
        padding: var(--spacing-md);
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-700);
}

@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: block;
    }
}

/* ========================================
   13. LOADING SPINNER & OVERLAY
   ======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 5px solid var(--gray-200);
    border-top: 5px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.loading-text {
    margin-top: var(--spacing-md);
    font-weight: 600;
    color: var(--primary);
    text-align: center;
}

/* ========================================
   14. ANIMATIONS
   ======================================== */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

/* ========================================
   15. AUTHENTICATION PAGES
   ======================================== */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    padding: var(--spacing-lg);
}

.auth-card {
    background: var(--white);
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid var(--gray-200);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    display: inline-block;
}

.auth-subtitle {
    color: var(--gray-500);
    font-size: 0.95rem;
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}