/* FHNW Customer Portal Styles */

/* CSS Variables - FHNW Brand Colors */
:root {
    --fhnw-yellow: #FDE70E;
    --fhnw-black: #000000;
    --fhnw-white: #FFFFFF;
    --fhnw-gray-light: #F5F5F5;
    --fhnw-gray: #E0E0E0;
    --fhnw-gray-dark: #666666;
    --fhnw-gray-darker: #333333;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Reset and Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--fhnw-gray-light);
    color: var(--fhnw-gray-darker);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Accessibility */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Header */
.header {
    background-color: var(--fhnw-yellow);
    color: var(--fhnw-black);
    padding: 1rem 2rem;
}

.header-content {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 40px;
}

.logo {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: auto;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--fhnw-black);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.nav-link:hover {
    border-bottom-color: var(--fhnw-black);
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
    width: 100%;
}

/* Page Title (in header) */
.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--fhnw-black);
    text-align: center;
    margin: 0;
}

/* Search Section */
.search-section {
    margin-bottom: 2rem;
}

.search-description {
    max-width: 600px;
    margin: 0 auto 1.5rem auto;
    text-align: center;
    color: var(--fhnw-gray-darker);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    font-size: 1rem;
    border: 2px solid var(--fhnw-gray);
    border-radius: var(--radius-lg);
    background-color: var(--fhnw-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--fhnw-yellow);
    box-shadow: 0 0 0 3px rgba(253, 210, 0, 0.3);
}

.search-input::placeholder {
    color: var(--fhnw-gray-dark);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--fhnw-gray-dark);
    pointer-events: none;
}

/* Links Section */
.links-section {
    min-height: 200px;
}

.links-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Category Groups */
.category-group {
    grid-column: 1 / -1;
    background-color: var(--fhnw-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--fhnw-gray);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    cursor: pointer;
    background-color: var(--fhnw-white);
    border: none;
    width: 100%;
    text-align: left;
    transition: background-color var(--transition-fast);
}

.category-header:hover {
    background-color: var(--fhnw-gray-light);
}

.category-header:focus {
    outline: none;
    background-color: var(--fhnw-gray-light);
    box-shadow: inset 0 0 0 2px var(--fhnw-yellow);
}

.category-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--fhnw-gray-darker);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-count {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--fhnw-gray-dark);
    background-color: var(--fhnw-gray-light);
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
}

.category-toggle {
    width: 24px;
    height: 24px;
    color: var(--fhnw-gray-dark);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.category-group.expanded .category-toggle {
    transform: rotate(180deg);
}

.category-links {
    display: none;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    padding: 1rem 1.25rem 1.25rem 1.25rem;
}

.category-group.expanded .category-links {
    display: grid;
}

/* Link Card */
.link-card {
    background-color: var(--fhnw-white);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    display: block;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--fhnw-gray);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.link-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--fhnw-yellow);
}

.link-card:focus {
    outline: none;
    border-color: var(--fhnw-yellow);
    box-shadow: 0 0 0 3px rgba(253, 210, 0, 0.3);
}

.link-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--fhnw-black);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.link-card-title::after {
    content: '→';
    font-size: 0.875rem;
    color: var(--fhnw-gray-dark);
    transition: transform var(--transition-fast);
}

.link-card:hover .link-card-title::after {
    transform: translateX(4px);
}

.link-card-description {
    font-size: 0.875rem;
    color: var(--fhnw-gray-dark);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.link-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--fhnw-gray-darker);
    background-color: var(--fhnw-gray-light);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    border: 1px solid var(--fhnw-gray);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--fhnw-gray-dark);
}

.empty-state svg {
    margin-bottom: 1rem;
    color: var(--fhnw-gray);
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--fhnw-gray-darker);
    margin-bottom: 0.5rem;
}

.empty-state-message {
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.clear-search-btn {
    background-color: var(--fhnw-yellow);
    color: var(--fhnw-black);
    border: none;
    padding: 0.5rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.clear-search-btn:hover {
    background-color: #e5be00;
}

.clear-search-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(253, 210, 0, 0.5);
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--fhnw-gray-dark);
}

/* Error State */
.error-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--fhnw-gray-dark);
}

.error-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #dc2626;
    margin-bottom: 0.5rem;
}

.error-message {
    font-size: 0.875rem;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Footer */
.footer {
    background-color: var(--fhnw-white);
    border-top: 1px solid var(--fhnw-gray);
    padding: 1.5rem 1rem;
    text-align: center;
    color: var(--fhnw-gray-dark);
    font-size: 0.875rem;
}

.footer a {
    color: var(--fhnw-black);
    text-decoration: underline;
}

.footer a:hover {
    color: var(--fhnw-gray-darker);
}

/* Responsive Design */

/* Tablet (768px) */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
        min-height: 0;
    }

    .logo {
        position: static;
        transform: none;
        justify-content: center;
    }

    .page-title {
        font-size: 1.25rem;
    }

    .header-nav {
        gap: 1.5rem;
    }

    .links-container {
        grid-template-columns: 1fr;
    }

    .category-links {
        grid-template-columns: 1fr;
    }
}

/* Mobile (375px) */
@media (max-width: 480px) {
    .header {
        padding: 0.75rem 1rem;
    }

    .header-nav {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-link {
        font-size: 0.875rem;
    }

    .logo-text {
        display: none;
    }

    .main-content {
        padding: 1.5rem 1rem;
    }

    .search-input {
        padding: 0.875rem 0.875rem 0.875rem 2.75rem;
        font-size: 1rem;
    }

    .link-card {
        padding: 1rem;
    }

    .link-card-title {
        font-size: 0.9375rem;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .link-card {
        border-width: 2px;
    }

    .search-input {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}