/* Uplink Premium Brand Aesthetics */
:root {
    --uplink-primary-blue: #1B5EBE;
    --uplink-primary-gradient: linear-gradient(135deg, #1B5EBE, #2c72df);
    --uplink-secondary-green: #76C82B;
    --uplink-accent-green: #89e235;
    --uplink-dark-bg: #0f172a;
    --uplink-glass-bg: rgba(255, 255, 255, 0.92);
    --uplink-glass-border: rgba(255, 255, 255, 0.4);
    --uplink-light-gray: #f4f7fb;
    --uplink-white: #ffffff;
    --uplink-text: #1e293b;
    --uplink-text-muted: #64748b;
}

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

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

/* Sidebar */
.app-sidebar {
    width: 260px;
    background: var(--uplink-glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid var(--uplink-glass-border);
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 24px rgba(0,0,0,0.02);
    transition: all 0.3s ease;
    z-index: 1000;
}

.sidebar-brand {
    padding: 24px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.sidebar-brand img {
    height: 38px;
    margin-right: 12px;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 14px;
    overflow-y: auto;
}

.nav-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--uplink-text-muted);
    letter-spacing: 0.1em;
    margin-bottom: 12px;
    margin-top: 24px;
    padding-left: 10px;
}

.sidebar-nav .nav-item {
    margin-bottom: 4px;
    list-style: none;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    color: var(--uplink-text);
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.sidebar-nav .nav-link i {
    width: 24px;
    font-size: 1.1rem;
    margin-right: 10px;
    color: var(--uplink-text-muted);
    transition: all 0.2s ease;
}

.sidebar-nav .nav-link:hover {
    background: rgba(27, 94, 190, 0.08);
    color: var(--uplink-primary-blue);
}

.sidebar-nav .nav-link:hover i {
    color: var(--uplink-primary-blue);
}

.sidebar-nav .nav-link.active {
    background: var(--uplink-primary-gradient);
    color: var(--uplink-white);
    box-shadow: 0 4px 12px rgba(27, 94, 190, 0.3);
}

.sidebar-nav .nav-link.active i {
    color: var(--uplink-white);
}

/* Main Content Area */
.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.app-header {
    height: 70px;
    background: var(--uplink-glass-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--uplink-glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.015);
    z-index: 900;
    position: sticky;
    top: 0;
}

.user-dropdown .dropdown-toggle {
    color: var(--uplink-text);
    font-weight: 600;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.user-dropdown .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--uplink-primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 10px;
}

.app-content {
    flex: 1;
    padding: 32px;
    background: var(--uplink-light-gray);
    overflow-y: auto;
}

/* Premium Cards */
.card {
    border: none;
    border-radius: 12px;
    background: var(--uplink-white);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.03);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    padding: 20px 24px;
    font-weight: 600;
    color: var(--uplink-text);
}

/* Beautiful Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 10px 20px;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--uplink-primary-gradient);
    border: none;
    box-shadow: 0 4px 12px rgba(27, 94, 190, 0.3);
}

.btn-primary:hover {
    background: var(--uplink-primary-blue);
    box-shadow: 0 6px 16px rgba(27, 94, 190, 0.4);
    transform: translateY(-1px);
}

.btn-success {
    background: #76C82B;
    border: none;
    color: #fff;
    box-shadow: 0 4px 12px rgba(118, 200, 43, 0.3);
}

.btn-success:hover {
    background: #6ab526;
    box-shadow: 0 6px 16px rgba(118, 200, 43, 0.4);
    transform: translateY(-1px);
}

.btn-outline-primary {
    border-color: var(--uplink-primary-blue);
    color: var(--uplink-primary-blue);
}

.btn-outline-primary:hover {
    background: var(--uplink-primary-blue);
    color: white;
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 600;
}

.badge.bg-success { background-color: rgba(118, 200, 43, 0.15) !important; color: #589620 !important; }
.badge.bg-warning { background-color: rgba(245, 158, 11, 0.15) !important; color: #b45309 !important; }
.badge.bg-danger { background-color: rgba(239, 68, 68, 0.15) !important; color: #b91c1c !important; }
.badge.bg-primary { background-color: rgba(27, 94, 190, 0.15) !important; color: var(--uplink-primary-blue) !important; }

/* Dashboard Stat Cards */
.stat-card {
    background: var(--uplink-white);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
    transition: all 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.08);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100%;
    background: var(--uplink-primary-gradient);
    opacity: 0.03;
    clip-path: polygon(25% 0%, 100% 0%, 100% 100%, 0% 100%);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: rgba(27, 94, 190, 0.1);
    color: var(--uplink-primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-right: 20px;
}

.stat-icon.green {
    background: rgba(118, 200, 43, 0.1);
    color: var(--uplink-secondary-green);
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--uplink-text);
}

.stat-info p {
    color: var(--uplink-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0;
}