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

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--c-primary);
    background-image: linear-gradient(180deg, var(--c-primary) 0%, #0f172a 100%);
    color: white;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform var(--transition-bounce);
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.1);
    z-index: 20;
}

.sidebar-header {
    padding: var(--spacing-6);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: var(--font-size-lg);
    box-shadow: 0 4px 10px rgba(14, 165, 233, 0.4);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-4) 0;
    overflow-y: auto;
}

.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    padding: 0 var(--spacing-4);
    margin-bottom: var(--spacing-2);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    color: #cbd5e1;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
    transform: translateX(4px);
}

.nav-link.active {
    background-color: rgba(14, 165, 233, 0.1);
    color: white;
    border-left-color: var(--c-secondary);
}

.nav-link svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0; /* Important for preventing flexbox overflow */
}

/* Top Header */
.top-header {
    height: 70px;
    background-color: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-6);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.header-search {
    position: relative;
    width: 300px;
}

.header-search input {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-4) var(--spacing-2) var(--spacing-8);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-full);
    background-color: var(--c-bg);
    outline: none;
    transition: border-color var(--transition-fast);
}

.header-search input:focus {
    border-color: var(--c-secondary);
}

.header-search svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--c-text-muted);
    width: 16px;
    height: 16px;
}

.header-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

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

.profile-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.profile-role {
    font-size: var(--font-size-xs);
    color: var(--c-text-muted);
}

/* Page Content */
.page-content {
    padding: var(--spacing-6);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.page-header {
    margin-bottom: var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: var(--spacing-1);
}

.page-description {
    color: var(--c-text-muted);
    font-size: var(--font-size-sm);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -260px;
        height: 100vh;
        z-index: 50;
    }
    .sidebar.open {
        transform: translateX(260px);
    }
}

/* -------------------------------------------------------------
 * Sidebar Navigation Grouping
 * ----------------------------------------------------------- */
.nav-category {
    padding: var(--spacing-4) var(--spacing-4) var(--spacing-2) var(--spacing-4);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.nav-category-line {
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
}

/* -------------------------------------------------------------
 * Standalone Centered Authentication Layout
 * ----------------------------------------------------------- */
.auth-page {
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #0b1120;
    background-image: 
        radial-gradient(at 15% 15%, rgba(14, 165, 233, 0.18) 0px, transparent 50%),
        radial-gradient(at 85% 85%, rgba(99, 102, 241, 0.2) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(15, 23, 42, 0.95) 0px, #070a13 100%);
    padding: var(--spacing-6);
    position: relative;
    overflow: hidden;
}

.auth-ambient-glow {
    position: absolute;
    width: 650px;
    height: 650px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: pulse-glow 8s ease-in-out infinite alternate;
}

@keyframes pulse-glow {
    0% { transform: translate(-50%, -50%) scale(0.92); opacity: 0.6; }
    100% { transform: translate(-50%, -50%) scale(1.08); opacity: 1; }
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-2xl, 1.25rem);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), 0 0 35px rgba(14, 165, 233, 0.15);
    padding: 2.25rem 2rem;
    position: relative;
    z-index: 10;
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-6);
}

.auth-logo-badge {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-4) auto;
    border-radius: var(--radius-xl);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    color: white;
    box-shadow: 0 10px 25px rgba(14, 165, 233, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.auth-brand-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.auth-brand-subtitle {
    font-size: 0.75rem;
    font-weight: 600;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.auth-brand-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    background: rgba(14, 165, 233, 0.12);
    border: 1px solid rgba(14, 165, 233, 0.3);
    color: #38bdf8;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.auth-error-alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-5);
    font-size: var(--font-size-sm);
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

.auth-form-group {
    margin-bottom: var(--spacing-4);
}

.auth-form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.auth-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.auth-input-icon {
    position: absolute;
    left: 14px;
    color: #64748b;
    pointer-events: none;
    width: 18px;
    height: 18px;
}

.auth-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.6rem;
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    color: #ffffff;
    font-size: var(--font-size-sm);
    font-family: inherit;
    transition: all var(--transition-fast);
}

.auth-input:focus {
    outline: none;
    border-color: var(--c-secondary);
    background: rgba(30, 41, 59, 0.95);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

.auth-submit-btn {
    width: 100%;
    padding: 0.85rem;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: #ffffff;
    font-weight: 600;
    font-size: var(--font-size-sm);
    letter-spacing: 0.02em;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    transition: all var(--transition-fast);
    margin-top: var(--spacing-5);
}

.auth-submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.6);
}

.auth-submit-btn:active {
    transform: translateY(1px);
}

.auth-demo-accounts {
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-5);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.auth-demo-title {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #64748b;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    text-align: center;
}

.auth-demo-chips {
    display: flex;
    gap: var(--spacing-2);
    justify-content: center;
    flex-wrap: wrap;
}

.auth-chip {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    padding: 4px 10px;
    font-size: 0.6875rem;
    color: #94a3b8;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.auth-chip:hover {
    background: rgba(14, 165, 233, 0.15);
    border-color: var(--c-secondary);
    color: #38bdf8;
    transform: translateY(-1px);
}