/* ========================================
   Client Subscription Tracking Portal
   Premium Design System 2.0
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ========== CSS Variables ========== */
:root {
    /* Primary Palette - Indigo/Violet Gradient Theme */
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent-color: #a855f7;

    /* Semantic Colors */
    --success-color: #10b981;
    --success-light: rgba(16, 185, 129, 0.1);
    --warning-color: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.1);
    --danger-color: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.1);
    --info-color: #3b82f6;
    --info-light: rgba(59, 130, 246, 0.1);

    /* Backgrounds */
    --bg-app: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.7);

    /* Text */
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-on-primary: #ffffff;

    /* Borders & Shadows */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-premium: 0 10px 25px -5px rgba(99, 102, 241, 0.1), 0 8px 10px -6px rgba(99, 102, 241, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

/* ========== Reset & Base ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-app);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.01em;
}

/* ========== Layout ========== */
.page-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ========== Sidebar 2.0 ========== */
.sidebar {
    width: 280px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.02);
}

.sidebar-header {
    margin-bottom: 3rem;
    padding-left: 0.5rem;
}

.sidebar-logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-nav {
    list-style: none;
    flex: 1;
}

.sidebar-nav li {
    margin-bottom: 0.5rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: var(--transition-fast);
}

.sidebar-nav a:hover {
    background: var(--border-light);
    color: var(--primary-color);
    transform: translateX(4px);
}

.sidebar-nav a.active {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

.sidebar-footer {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.user-avatar {
    width: 42px;
    height: 42px;
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.2);
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
    display: block;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========== Main Content ========== */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 3rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
}

.page-title {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

/* ========== Cards ========== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    border: 1px solid rgba(255, 255, 255, 0.7);
    margin-bottom: 2rem;
    overflow: hidden;
    transition: var(--transition-smooth);
}

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

.card-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(248, 250, 252, 0.5);
}

.card-body {
    padding: 2rem;
}

/* ========== Stats Grid ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-premium);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 140px;
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0.7;
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-main);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-icon {
    font-size: 1.75rem;
    opacity: 0.9;
}

/* ========== Tables ========== */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: var(--border-light);
    padding: 1.25rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 700;
}

.table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}

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

.table tr:hover td {
    background: #fdfdff;
}

/* ========== Badges ========== */
.badge {
    padding: 0.35rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-warning {
    background: #fef9c3;
    color: #854d0e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #e0f2fe;
    color: #075985;
}

.badge-secondary {
    background: #f1f5f9;
    color: #475569;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
    font-family: 'Inter', sans-serif;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
    background: #f1f5f9;
    color: #475569;
}

.btn-secondary:hover {
    background: #e2e8f0;
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-warning {
    background: #f59e0b;
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

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

/* ========== Forms ========== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: #475569;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--text-main);
    transition: var(--transition-fast);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

/* ========== Modal 2.0 ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: #fff;
    width: 90%;
    max-width: 650px;
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: translateY(20px);
    transition: var(--transition-smooth);
    overflow: hidden;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 1.5rem 2rem;
    background: var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1.5rem 2rem;
    background: var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* ========== Login Page 2.0 ========== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    top: -400px;
    right: -400px;
}

.login-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    padding: 3rem;
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 450px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    z-index: 1;
}

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-logo {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: #64748b;
    font-weight: 500;
}

/* ========== Utilities ========== */
.mt-4 {
    margin-top: 1rem;
}

.mt-8 {
    margin-top: 2rem;
}

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

.hidden {
    display: none;
}

/* Toast & Loading Overlays (from utils.js) */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
}

.toast {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    border-left: 4px solid var(--primary-color);
    animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    color: #fff;
    gap: 1rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}