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

body {
    font-family: var(--font-sans);
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-medium) 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

button {
    font-family: var(--font-sans);
    cursor: pointer;
    border: none;
    outline: none;
    transition: all var(--transition-fast);
}

input, textarea, select {
    font-family: var(--font-sans);
    outline: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.app-logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary-light);
}

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

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-name {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.btn-logout {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
}

.app-main {
    flex: 1;
    padding: var(--spacing-2xl);
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.flash-messages {
    margin-bottom: var(--spacing-lg);
}

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border-left: 4px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-info);
    color: var(--color-info);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.auth-wrapper {
    width: 100%;
    max-width: 450px;
}

.auth-card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
}

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

.auth-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

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

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-primary);
    background: rgba(15, 23, 42, 0.7);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-checkbox label {
    margin: 0;
    cursor: pointer;
}

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 1rem;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-bg-light);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background: var(--color-bg-lighter);
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-warning {
    background: var(--color-warning);
    color: white;
}

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.auth-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.auth-link {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.auth-link:hover {
    color: var(--color-primary-light);
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-success);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-danger);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
}

.badge-info {
    background: rgba(6, 182, 212, 0.2);
    color: var(--color-info);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.2);
    color: var(--color-primary-light);
}

.badge-secondary {
    background: rgba(148, 163, 184, 0.2);
    color: var(--color-text-secondary);
}

.text-muted {
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .header-left {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .app-main {
        padding: var(--spacing-lg);
    }
}