/*
 * Solution Hub Component Styles
 * Depends on: /css/style.css for design tokens
 * Component-specific styles only below
 */

/* ============================================
   Component-Specific Design Tokens
   These override or extend the base tokens from style.css
   ============================================ */
:root {
    /* Component-specific color overrides */
    --color-primary: #5B8A8C;
    --color-primary-hover: #4A7375;
    --color-primary-light: #E8F1F2;
    --color-primary-pale: #F5F9F9;

    --color-accent: #8EACB0;
    --color-accent-warm: #B89D7E;

    --color-text-primary: #2C3E40;
    --color-text-secondary: #5A6C6E;
    --color-text-tertiary: #7A8C8E;

    --color-background: #FFFFFF;
    --color-background-secondary: #F8FAFA;
    --color-background-tertiary: #F0F4F5;

    --color-border: #D8E4E5;
    --color-border-light: #E8F0F1;

    --color-priority: #D97757;
    --color-success: #6B9F85;

    /* Component-specific typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-xs: 0.75rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Component-specific spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Component-specific layout */
    --container-max-width: 1200px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;

    /* Component-specific transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Component-specific shadows */
    --shadow-sm: 0 1px 2px rgba(44, 62, 64, 0.04);
    --shadow-md: 0 2px 8px rgba(44, 62, 64, 0.06);
    --shadow-lg: 0 4px 16px rgba(44, 62, 64, 0.08);
    --shadow-focus: 0 0 0 3px rgba(91, 138, 140, 0.15);
}

/* 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;
    }
}

/* ============================================
   Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-background-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Accessibility Utilities
   ============================================ */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    border-radius: 0 0 var(--border-radius-sm) 0;
    font-weight: var(--font-weight-semibold);
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

.back-to-catalog {
    position: fixed;
    top: 1rem;
    left: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #4A7C8C;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid #E8E4DD;
    border-radius: 6px;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.2s ease;
}

.back-to-catalog:hover {
    background: #4A7C8C;
    color: white;
    border-color: #4A7C8C;
}

.back-to-catalog:focus {
    outline: 2px solid #4A7C8C;
    outline-offset: 2px;
}

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

/* ============================================
   Main Container
   ============================================ */
.solution-hub {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
}

@media (min-width: 768px) {
    .solution-hub {
        padding: var(--space-3xl) var(--space-xl);
    }
}

/* ============================================
   Header Section
   ============================================ */
.hub-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.hub-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    line-height: var(--line-height-tight);
}

.hub-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 767px) {
    .hub-title {
        font-size: var(--font-size-2xl);
    }

    .hub-subtitle {
        font-size: var(--font-size-base);
    }
}

/* ============================================
   Search Section
   ============================================ */
.search-section {
    margin-bottom: var(--space-2xl);
}

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

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

.search-icon {
    position: absolute;
    left: var(--space-md);
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: var(--space-md) var(--space-md) var(--space-md) calc(var(--space-md) * 3);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-input::placeholder {
    color: var(--color-text-tertiary);
}

.search-input:hover {
    border-color: var(--color-accent);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

.search-clear {
    position: absolute;
    right: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--color-text-tertiary);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.search-clear:hover {
    color: var(--color-text-primary);
    background-color: var(--color-background-tertiary);
}

.search-clear:focus {
    outline: none;
    box-shadow: var(--shadow-focus);
}

/* ============================================
   Quick Access Section
   ============================================ */
.quick-access {
    margin-bottom: var(--space-2xl);
}

.quick-access-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

@media (max-width: 767px) {
    .shortcuts-grid {
        grid-template-columns: 1fr;
    }
}

.shortcut-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-background);
    border: 2px solid var(--color-border-light);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

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

.shortcut-card:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

.shortcut-card.shortcut-priority {
    border-color: var(--color-priority);
    background: linear-gradient(135deg, rgba(217, 119, 87, 0.03) 0%, var(--color-background) 100%);
}

.shortcut-card.shortcut-priority:hover {
    border-color: var(--color-priority);
}

.shortcut-icon {
    flex-shrink: 0;
    color: var(--color-primary);
}

.shortcut-card.shortcut-priority .shortcut-icon {
    color: var(--color-priority);
}

.shortcut-label {
    flex: 1;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
}

.shortcut-badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: white;
    background-color: var(--color-priority);
    border-radius: var(--border-radius-full);
}

/* ============================================
   Filter Section
   ============================================ */
.filter-section {
    margin-bottom: var(--space-xl);
}

.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.filter-pill {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: inherit;
    color: var(--color-text-secondary);
    background-color: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-pill:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: var(--color-primary-pale);
}

.filter-pill:focus {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.filter-pill.active {
    color: white;
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.filter-pill.active:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

/* ============================================
   Results Status
   ============================================ */
.results-status {
    margin-bottom: var(--space-lg);
}

.results-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.count-number {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

/* ============================================
   Solutions Grid
   ============================================ */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 767px) {
    .solutions-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Solution Card
   ============================================ */
.solution-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background: var(--color-background);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-lg);
    transition: box-shadow var(--transition-base), transform var(--transition-fast), border-color var(--transition-base);
}

.solution-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-border);
}

.solution-card:focus-within {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.card-category {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background-color: var(--color-primary-pale);
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.card-duration {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-weight: var(--font-weight-medium);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-md);
}

.card-link {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.card-link:focus {
    outline: none;
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

.card-description {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
}

.card-footer {
    display: flex;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

.card-type {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-weight: var(--font-weight-medium);
}

.card-type svg {
    flex-shrink: 0;
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
}

.empty-state-icon {
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xl);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.empty-state-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 500px;
    margin-bottom: var(--space-lg);
}

.empty-state-text strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

.empty-state-suggestions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.empty-state-suggestions-title {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-xs);
}

.btn-suggestion {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: inherit;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    min-width: 150px;
}

.btn-suggestion:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-suggestion:focus {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.btn-suggestion:active {
    transform: translateY(0);
}

.empty-state-button {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    color: white;
    background-color: var(--color-primary);
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: background-color var(--transition-base), transform var(--transition-fast);
}

.empty-state-button:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
}

.empty-state-button:focus {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.empty-state-button:active {
    transform: translateY(0);
}

/* ============================================
   Animation Classes
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(8px);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

.fade-out {
    animation: fadeOut var(--transition-base) ease-out;
}

/* Hidden state for filtering */
.solution-card[hidden],
.solutions-grid[hidden],
.empty-state[hidden] {
    display: none;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .search-section,
    .filter-section,
    .quick-access {
        display: none;
    }

    .solution-card {
        page-break-inside: avoid;
        border: 1px solid #000;
    }
}

/* ============================================
   High Contrast Mode Support
   ============================================ */
@media (prefers-contrast: high) {
    .solution-card,
    .shortcut-card,
    .search-input {
        border-width: 2px;
    }

    .filter-pill {
        border-width: 2px;
    }
}