/* ============================================
   PREOP.RO - BASE STYLES
   Ghiduri înainte de operație
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES (Light Mode)
   ============================================ */
:root {
    /* Colors - Light Mode */
    --color-bg-primary: #FAFBFC;
    --color-bg-secondary: #FFFFFF;
    --color-bg-elevated: #FFFFFF;
    --color-text-primary: #111827;
    --color-text-secondary: #4B5563;
    --color-text-tertiary: #6B7280;
    --color-primary: #2F6FED;
    --color-primary-hover: #1E5FDC;
    --color-accent: #1EB980;
    --color-accent-hover: #1AA970;
    --color-border: #E5E7EB;
    --color-border-strong: #D1D5DB;
    --color-error: #DC2626;
    --color-error-bg: #FEE2E2;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.55;
    --line-height-heading: 1.25;

    /* Spacing */
    --spacing-unit: 8px;
    --container-max-width: 960px;
    --content-max-width: 720px;

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* ============================================
   DARK MODE (Automatic)
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-primary: #0B0F14;
        --color-bg-secondary: #151A21;
        --color-bg-elevated: #1F2937;
        --color-text-primary: #E5E7EB;
        --color-text-secondary: #9CA3AF;
        --color-text-tertiary: #6B7280;
        --color-primary: #5B85FF;
        --color-primary-hover: #7A9AFF;
        --color-accent: #22C28C;
        --color-accent-hover: #2DD89A;
        --color-border: #1F2937;
        --color-border-strong: #374151;
        --color-error: #F87171;
        --color-error-bg: #3F1D1D;

        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    }
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--line-height-heading);
    color: var(--color-text-primary);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

h1 { font-size: 2rem; font-weight: 700; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5, h6 { font-size: 1rem; }

p {
    margin-bottom: calc(var(--spacing-unit) * 2);
}

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

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

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}

strong, b {
    font-weight: 600;
}

em, i {
    font-style: italic;
}

code {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    background-color: var(--color-bg-elevated);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-left: 16px;
    padding-right: 16px;
}

.site-main {
    flex: 1;
    padding: calc(var(--spacing-unit) * 4) 0;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: calc(var(--spacing-unit) * 2) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
}

.site-logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--color-text-primary);
}

.site-logo:hover {
    text-decoration: none;
}

.site-logo strong {
    font-size: 1.25rem;
    font-weight: 700;
}

.site-logo .tagline {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.main-nav {
    display: flex;
    gap: calc(var(--spacing-unit) * 3);
}

.main-nav a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
    color: var(--color-text-primary);
}

.main-nav a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
}

@media (max-width: 640px) {
    .main-nav {
        gap: calc(var(--spacing-unit) * 2);
    }

    .main-nav a {
        font-size: 0.875rem;
    }
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: calc(var(--spacing-unit) * 6) 0 calc(var(--spacing-unit) * 3) 0;
    margin-top: calc(var(--spacing-unit) * 8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.footer-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-brand {
    margin-bottom: 0;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 1);
}

.footer-nav a {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.footer-bottom {
    padding-top: calc(var(--spacing-unit) * 3);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin: 0;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 1);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    font-family: var(--font-family);
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

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

.btn-secondary {
    background-color: var(--color-bg-elevated);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-primary);
    border-color: var(--color-border-strong);
    text-decoration: none;
}

.btn-sm {
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    font-size: 0.875rem;
}

.btn-lg {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    font-size: 1.0625rem;
}

/* ============================================
   CARDS
   ============================================ */
.guide-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: calc(var(--spacing-unit) * 3);
    transition: all var(--transition-base);
}

.guide-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
}

.guide-card-header {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 2);
    flex-wrap: wrap;
}

.guide-card-specialty,
.guide-card-date {
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 4px calc(var(--spacing-unit) * 1.5);
    border-radius: var(--radius-sm);
}

.guide-card-specialty {
    background-color: var(--color-accent);
    color: white;
}

.guide-card-date {
    background-color: var(--color-bg-elevated);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.guide-card-title {
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.guide-card-title a {
    color: var(--color-text-primary);
    text-decoration: none;
}

.guide-card-title a:hover {
    color: var(--color-primary);
}

.guide-card-summary {
    color: var(--color-text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.guide-card-actions {
    display: flex;
    gap: calc(var(--spacing-unit) * 1.5);
    flex-wrap: wrap;
}

/* ============================================
   GUIDES GRID
   ============================================ */
.guides-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: calc(var(--spacing-unit) * 3);
    margin-top: calc(var(--spacing-unit) * 4);
}

@media (min-width: 768px) {
    .guides-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.page-intro {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   SEARCH
   ============================================ */
.search-section {
    margin-bottom: calc(var(--spacing-unit) * 4);
}

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

.search-icon {
    position: absolute;
    left: calc(var(--spacing-unit) * 2);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 6);
    font-family: var(--font-family);
    font-size: 1rem;
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.1);
}

.search-results-info {
    text-align: center;
    margin-top: calc(var(--spacing-unit) * 2);
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

/* ============================================
   GUIDE PAGE
   ============================================ */
.guide-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.guide-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 2);
    flex-wrap: wrap;
}

.guide-specialty,
.guide-updated,
.guide-version {
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 4px calc(var(--spacing-unit) * 1.5);
    border-radius: var(--radius-sm);
}

.guide-specialty {
    background-color: var(--color-accent);
    color: white;
}

.guide-updated,
.guide-version {
    background-color: var(--color-bg-elevated);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.guide-title {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.guide-summary {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto calc(var(--spacing-unit) * 3) auto;
}

.guide-actions {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 2);
    flex-wrap: wrap;
}

/* ============================================
   GUIDE LAYOUT (Sidebar + Content)
   ============================================ */
.guide-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: calc(var(--spacing-unit) * 4);
    max-width: 1400px;
    margin: 0 auto;
}

@media (min-width: 1024px) {
    .guide-layout {
        grid-template-columns: 320px 1fr;
        gap: calc(var(--spacing-unit) * 5);
    }
}

/* ============================================
   TABLE OF CONTENTS
   ============================================ */
.guide-sidebar {
    display: none;
}

@media (min-width: 1024px) {
    .guide-sidebar {
        display: block;
    }

    .toc-sticky {
        position: sticky;
        top: calc(var(--spacing-unit) * 10);
    }
}

.toc-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.toc-nav ul {
    list-style: none;
}

.toc-item {
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.toc-item a {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: calc(var(--spacing-unit) * 0.5) 0;
    transition: color var(--transition-fast);
}

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

.toc-item.toc-level-3 {
    padding-left: calc(var(--spacing-unit) * 2);
}

.toc-item.toc-level-3 a {
    font-size: 0.8125rem;
}

/* Mobile TOC Toggle */
#toggleTocMobile {
    display: inline-flex;
}

@media (min-width: 1024px) {
    #toggleTocMobile {
        display: none;
    }
}

/* Mobile TOC Drawer */
@media (max-width: 1023px) {
    .guide-sidebar {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 280px;
        background-color: var(--color-bg-secondary);
        border-right: 1px solid var(--color-border);
        padding: calc(var(--spacing-unit) * 3);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: 200;
        overflow-y: auto;
    }

    .guide-sidebar[aria-expanded="true"] {
        transform: translateX(0);
    }
}

/* ============================================
   GUIDE CONTENT
   ============================================ */
.guide-content {
    max-width: var(--content-max-width);
}

.guide-content h2 {
    margin-top: calc(var(--spacing-unit) * 6);
    padding-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid var(--color-border);
}

.guide-content h3 {
    margin-top: calc(var(--spacing-unit) * 4);
}

.guide-content ul,
.guide-content ol {
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-left: calc(var(--spacing-unit) * 4);
}

.guide-content li {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    line-height: 1.65;
}

.guide-content li::marker {
    color: var(--color-primary);
}

/* Checklist styling */
.guide-content input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: calc(var(--spacing-unit) * 1.5);
    cursor: pointer;
    accent-color: var(--color-accent);
}

/* ============================================
   DISCLAIMER BOX
   ============================================ */
.guide-disclaimer {
    background-color: var(--color-error-bg);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-md);
    padding: calc(var(--spacing-unit) * 3);
    margin: calc(var(--spacing-unit) * 6) 0;
}

.guide-disclaimer h3 {
    font-size: 1.125rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.guide-disclaimer p:last-child {
    margin-bottom: 0;
}

/* ============================================
   NAVIGATION
   ============================================ */
.guide-navigation {
    margin-top: calc(var(--spacing-unit) * 6);
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--color-border);
}

/* ============================================
   SIMPLE PAGE (Despre, Contact, Disclaimer)
   ============================================ */
.simple-page {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.prose {
    font-size: 1.0625rem;
    line-height: 1.7;
}

.prose h2 {
    margin-top: calc(var(--spacing-unit) * 5);
}

.prose h3 {
    margin-top: calc(var(--spacing-unit) * 4);
}

.prose ul,
.prose ol {
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-left: calc(var(--spacing-unit) * 4);
}

.prose li {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 2);
    color: var(--color-text-secondary);
}

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

/* Hide on mobile */
@media (max-width: 767px) {
    .hidden-mobile {
        display: none !important;
    }
}

/* Hide on desktop */
@media (min-width: 768px) {
    .hidden-desktop {
        display: none !important;
    }
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */
@media (max-width: 640px) {
    :root {
        --font-size-base: 15px;
    }

    .guide-title,
    .page-header h1 {
        font-size: 1.875rem;
    }

    .guide-actions {
        width: 100%;
    }

    .guide-actions .btn {
        flex: 1;
    }
}

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