/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* App Header */
.app-header {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-sm) 0;
    /* Removed border for cleaner look, relying on container shadow */
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.logo-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    color: inherit;
}

.logo-title:hover {
    text-decoration: none;
    opacity: 0.9;
}

.nav-main {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    justify-content: center;
    flex-grow: 1; /* Center the nav */
}

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

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

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--surface-secondary);
    text-decoration: none;
}

.app-logo {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    display: block;
}

.app-title {
    margin: 0;
    font-size: 1.8em;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .nav-main {
        order: 2;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .nav-user {
        order: 3;
        width: 100%;
        justify-content: center;
    }

    .app-logo {
        width: 32px;
        height: 32px;
    }

    .nav,
    .nav-right {
        width: 100%;
        flex-wrap: wrap;
    }

    .nav-right {
        margin-left: 0;
    }
}

/* Footer */
.app-footer {
    margin-top: auto;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-nav a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

/* Static Page Content */
.static-page-content {
    max-width: 700px;
}

.static-page-content h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.static-page-content ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.static-page-content li {
    margin-bottom: var(--spacing-xs);
}

.contact-email {
    font-size: var(--font-size-lg);
}

.contact-email a {
    color: var(--primary-color);
    font-weight: var(--font-weight-medium);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 1000;
    display: flex;
    justify-content: center;
}

.cookie-banner-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    max-width: 1200px;
    width: 100%;
}

.cookie-banner-content p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.cookie-banner-content a {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .cookie-banner-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1.5;
}

.btn:hover {
    text-decoration: none;
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: var(--font-weight-medium);
}

.btn-text:hover {
    color: var(--primary-color);
    background-color: rgba(0,0,0,0.05);
    box-shadow: none;
    transform: none;
}

.btn-ghost {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-ghost:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: transparent;
}

.btn-icon {
    padding: 0.4rem;
    min-width: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon svg {
    display: block;
}

.btn-icon.btn-ghost:hover {
    color: var(--danger-color, #dc3545);
    border-color: var(--danger-color, #dc3545);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
}

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

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
}

/* Cards */
.card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition:
        box-shadow var(--transition-fast),
        background-color var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

a.card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

a.card-link:hover {
    text-decoration: none;
}

a.card-link h3 {
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

a.card-link:hover h3 {
    color: var(--primary-color);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--surface-secondary);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--surface-secondary);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background-color var(--transition-normal);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-subtle);
}

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

.form-check-input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    color: var(--gray-800);
    margin: 0;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
    background-color: var(--surface-color);
    transition: background-color var(--transition-normal);
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
    color: var(--text-primary);
}

.table th {
    background-color: var(--surface-secondary);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    border-top: 1px solid var(--border-color);
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background-color: var(--surface-secondary);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--surface-secondary);
}

.table-bordered {
    border: 1px solid var(--border-color);
}

.table-bordered th,
.table-bordered td {
    border: 1px solid var(--border-color);
}

/* Navigation */

.nav-link {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    background-color: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.nav-link:hover {
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
}

.nav-link.active {
    background-color: var(--primary-color);
    color: var(--white);
    font-weight: var(--font-weight-semibold);
}

@media (max-width: 768px) {
    .nav {
        width: 100%;
        flex-wrap: wrap;
    }
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-index-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-content {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    transition: background-color var(--transition-normal);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
    background-color: var(--surface-secondary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* Alerts */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeaa7;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

/* Error Pages */
.error-container {
    padding: 4rem 0;
    text-align: center;
}

.error-code {
    font-size: 6rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-muted);
    line-height: 1;
    margin-bottom: var(--spacing-lg);
}

.error-message {
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-secondary);
    font-size: 1.1em;
    margin-bottom: var(--spacing-xl);
}

/* Auth */
.auth-container {
    max-width: 400px;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-xl);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.auth-container h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Navigation Logout Form */
.nav-logout-form {
    display: inline-block;
    margin: 0;
}

/* Ensure button with nav-link class looks right */
button.nav-link {
    font-family: inherit;
    font-size: var(--font-size-base);
    line-height: inherit;
    cursor: pointer;
    vertical-align: middle;
}

/* Enhanced Auth Styles */
.auth-container {
    max-width: 440px;
    padding: var(--spacing-xxl);
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center; /* Center everything by default */
}

.auth-container h2 {
    font-size: 1.8em;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

/* Auth Header with Logo */
.auth-header {
    margin-bottom: var(--spacing-xl);
}

.auth-logo {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
}

/* Form Styles within Auth */
.auth-container form {
    text-align: left; /* Reset text align for form content */
}

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

.auth-container label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.auth-container input[type="text"],
.auth-container input[type="email"],
.auth-container input[type="password"] {
    display: block;
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--background-secondary); /* Slight contrast */
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

.auth-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--surface-color);
    box-shadow: 0 0 0 3px var(--primary-subtle, rgba(44, 87, 121, 0.1));
}

.auth-container .helptext {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.85em;
    color: var(--text-secondary);
}

.auth-container ul.errorlist {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--danger-color);
    font-size: 0.9em;
}

.auth-container button[type="submit"] {
    width: 100%;
    padding: 12px;
    font-size: 1.1em;
    margin-top: var(--spacing-md);
}

.auth-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Weight Unit Selector */
#weight-unit-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background-color: transparent;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    margin-right: var(--spacing-sm);
}

#weight-unit-select:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.15em 0.4em;
    font-size: 0.75em;
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius-sm);
    vertical-align: middle;
    margin-left: var(--spacing-xs);
}

.badge-public {
    background-color: rgba(40, 167, 69, 0.1);
    color: #28a745;
}