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

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-soft: rgba(99, 102, 241, 0.1);
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #f1f5f9;
    --sidebar-width: 280px;
    --radius: 16px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --glass: rgba(255, 255, 255, 0.7);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

/* Enhanced Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: #ffffff;
    border-right: 1px solid #edf2f7;
    padding: 2.5rem 1.5rem;
    position: fixed;
    height: 100vh;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 3.5rem;
    padding-left: 0.5rem;
}

.logo i {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
}

.nav-item:hover {
    background: var(--bg-body);
    color: var(--primary);
    transform: translateX(5px);
}

.nav-item.active {
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
}

.nav-item i {
    font-size: 1.5rem;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2.5rem 4rem;
    max-width: 1400px;
}

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

.page-title h1 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 0.25rem;
}

.page-title p {
    color: var(--text-muted);
    font-size: 1.125rem;
}

/* Cards System */
.glass-panel {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 1);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s ease;
}

.glass-panel:hover {
    box-shadow: var(--shadow-lg);
}

.form-section {
    background: #ffffff;
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.section-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-main);
}

.section-header i {
    color: var(--primary);
    font-size: 1.5rem;
    background: var(--primary-soft);
    padding: 0.5rem;
    border-radius: 10px;
}

/* Advanced Forms */
.form-group {
    margin-bottom: 1.75rem;
}

.form-label {
    display: block;
    margin-bottom: 0.625rem;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 0.875rem 1.125rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    background-color: #ffffff;
    transition: all 0.2s ease;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-main);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-soft);
}

.form-control::placeholder {
    color: #cbd5e1;
}

/* Premium Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.875rem 1.75rem;
    border-radius: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #4f46e5);
    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 0 rgba(99, 102, 241, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

/* Toasts */
.toast {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    animation: slideIn 0.3s ease-out;
    border-left: 5px solid var(--primary);
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive Customizations */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
    display: inline-block;
}

/* Table Systems */
.table-container {
    overflow-x: auto;
    margin: 0 -0.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    min-width: 800px;
}

th {
    padding: 1rem;
    text-align: left;
    color: var(--text-muted);
    font-size: 0.8125rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 1.25rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 0.875rem;
}

tr:hover td {
    background-color: var(--bg-body);
}