:root {
    --primary: #1e3a8a;
    --primary-light: #2563eb;
    --primary-gradient: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    --primary-soft: #eff6ff;
    --accent-gold: #d97706;
    --surface: #ffffff;
    --bg-main: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --sidebar-width: 260px;
    --sidebar-mini-width: 76px;
    --header-height: 70px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 20px 30px -10px rgba(30, 58, 138, 0.12);
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

/* ================= PAGE & COMPONENT KEYFRAME ANIMATIONS ================= */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(22px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes floatLogo {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    50% {
        transform: translateY(-6px) scale(1.02);
    }
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 15px rgba(37, 99, 235, 0.15);
    }
    50% {
        box-shadow: 0 0 28px rgba(37, 99, 235, 0.35);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Animation Utility Classes */
.animate-fade-in-up {
    animation: fadeInUp 0.65s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.animate-fade-in-down {
    animation: fadeInDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.floating-logo {
    animation: floatLogo 4.5s ease-in-out infinite;
    display: inline-block;
}

.pulse-glow {
    animation: pulseGlow 3s infinite;
}

.hover-lift {
    transition: var(--transition);
}
.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover) !important;
}

/* Glassmorphism Card Style */
.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-md);
    border-radius: 18px;
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

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

.sidebar {
    width: var(--sidebar-width);
    background: #ffffff;
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 1040;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.sidebar.minimized {
    width: var(--sidebar-mini-width);
}

.sidebar.minimized .sidebar-brand-text,
.sidebar.minimized .nav-link-text,
.sidebar.minimized .nav-section-title {
    display: none;
}

.sidebar.minimized .nav-link {
    justify-content: center;
    padding: 12px 0;
}

.sidebar.minimized .nav-link i {
    font-size: 1.25rem;
    margin-right: 0 !important;
}

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    transition: var(--transition);
    animation: fadeInUp 0.5s ease-out;
}

.main-content.expanded {
    margin-left: var(--sidebar-mini-width);
}

.app-header {
    height: var(--header-height);
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1020;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-menu {
    padding: 16px 12px;
    list-style: none;
    margin: 0;
    flex-grow: 1;
    overflow-y: auto;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 11px 16px;
    color: var(--text-muted);
    font-size: 0.92rem;
    font-weight: 500;
    border-radius: 10px;
    text-decoration: none;
    transition: var(--transition);
    margin-bottom: 4px;
}

.nav-link:hover {
    color: var(--primary-light);
    background-color: var(--primary-soft);
    transform: translateX(3px);
}

.nav-link.active {
    color: #ffffff;
    background: var(--primary-gradient);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.nav-section-title {
    font-size: 0.72rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #94a3b8;
    padding: 14px 14px 6px;
}

.stat-card {
    border-radius: 14px;
    padding: 22px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-right: 16px;
}

/* Modern Form Controls */
.form-control, .form-select {
    border-radius: 10px;
    border: 1px solid #cbd5e1;
    padding: 10px 14px;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
    border-radius: 10px;
    transition: var(--transition);
}

.btn-primary:hover {
    opacity: 0.95;
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(37, 99, 235, 0.3);
}

@media (max-width: 991.98px) {
    .sidebar {
        margin-left: calc(-1 * var(--sidebar-width));
    }
    .sidebar.mobile-open {
        margin-left: 0;
    }
    .main-content, .main-content.expanded {
        margin-left: 0;
    }
}