/* ============================================
   Magica Guide — Stylesheet
   Based on magica-app.com design language
   ============================================ */

:root {
    --color-primary: #007bff;
    --color-primary-hover: #0D62E1;
    --color-primary-light: #e8f2ff;
    --color-primary-bg: #f0f8ff;
    --color-text: #212529;
    --color-text-secondary: #555;
    --color-text-muted: #888;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-border: #e5e7eb;
    --color-border-light: #f0f0f0;
    --color-success: #22c55e;
    --color-warning: #f59e0b;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    --sidebar-width: 260px;
    --navbar-height: 60px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);

    --transition: 0.2s ease;
}

/* ---- Reset & Base ---- */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

/* ---- Container ---- */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Navbar ---- */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--color-text);
}

.brand-logo {
    height: 26px;
    width: auto;
}

.brand-guide {
    color: var(--color-primary);
    font-weight: 500;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.search-toggle:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

/* ---- Language Selector ---- */

.lang-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.lang-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.lang-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 140px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    z-index: 110;
}

.lang-dropdown.open {
    display: block;
}

.lang-option {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--color-text);
    transition: background var(--transition);
}

.lang-option:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.lang-option.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}

/* ---- Mobile Menu ---- */

.mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: none;
    border-radius: var(--radius);
    background: none;
    color: var(--color-text-secondary);
    cursor: pointer;
}

/* ---- Search Overlay ---- */

.search-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 200;
    padding: 80px 24px 24px;
}

.search-overlay.open {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.search-overlay-inner {
    width: 100%;
    max-width: 600px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.search-box svg {
    flex-shrink: 0;
    color: var(--color-text-muted);
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 16px;
    font-family: var(--font-family);
    color: var(--color-text);
    background: transparent;
}

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

.search-box kbd {
    padding: 2px 8px;
    font-size: 12px;
    font-family: var(--font-family);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text-muted);
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
}

.search-result-item {
    display: block;
    padding: 14px 20px;
    border-bottom: 1px solid var(--color-border-light);
    transition: background var(--transition);
    color: var(--color-text);
}

.search-result-item:hover {
    background: var(--color-primary-light);
    color: var(--color-text);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-title {
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 2px;
}

.search-result-desc {
    font-size: 13px;
    color: var(--color-text-muted);
}

.search-no-results {
    padding: 32px 20px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 14px;
}

/* ---- Layout ---- */

.layout {
    display: flex;
    min-height: calc(100vh - var(--navbar-height));
    margin-top: var(--navbar-height);
}

/* ---- Sidebar ---- */

.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--color-bg);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    padding: 20px 0;
    z-index: 50;
}

.sidebar-nav {
    padding: 0 12px;
}

.sidebar-section {
    margin-bottom: 8px;
}

.sidebar-heading {
    padding: 8px 12px 4px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    font-size: 14px;
    color: var(--color-text-secondary);
    border-radius: 6px;
    transition: all var(--transition);
}

.sidebar-link:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.sidebar-link.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}

.sidebar-link svg {
    flex-shrink: 0;
}

/* ---- Main Content ---- */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 40px 48px 80px;
    max-width: calc(100% - var(--sidebar-width));
    min-width: 0;
}

/* ---- Page Styles ---- */

.page-header {
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 8px;
    color: var(--color-text);
}

.page-description {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ---- Content Sections ---- */

.content-section {
    margin-bottom: 40px;
}

.content-section h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
    padding-top: 8px;
}

.content-section p {
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.content-section ol,
.content-section ul {
    margin: 12px 0 20px;
    padding-left: 24px;
}

.content-section li {
    margin-bottom: 8px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.content-section li strong {
    color: var(--color-text);
}

/* ---- Info Boxes ---- */

.info-box {
    display: flex;
    gap: 12px;
    padding: 16px;
    border-radius: var(--radius);
    margin: 16px 0 24px;
    font-size: 14px;
    line-height: 1.6;
}

.info-box.tip {
    background: #f0fdf4;
    border-left: 3px solid var(--color-success);
    color: #166534;
}

.info-box.note {
    background: var(--color-primary-light);
    border-left: 3px solid var(--color-primary);
    color: #1e40af;
}

.info-box.warning {
    background: #fffbeb;
    border-left: 3px solid var(--color-warning);
    color: #92400e;
}

.info-box-icon {
    flex-shrink: 0;
    font-size: 18px;
}

/* ---- Hero (Home) ---- */

.hero {
    text-align: center;
    padding: 48px 24px;
    background: linear-gradient(135deg, var(--color-primary-light), #f0f4ff);
    border-radius: var(--radius-lg);
    margin-bottom: 48px;
}

.hero h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.hero p {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ---- Card Grid ---- */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
}

.card {
    display: flex;
    flex-direction: column;
    padding: 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    color: var(--color-text);
}

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

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-primary-light);
    border-radius: var(--radius);
    margin-bottom: 16px;
    color: var(--color-primary);
}

.card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* ---- FAQ ---- */

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color var(--transition);
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px 20px;
    background: none;
    border: none;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-family);
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
    gap: 12px;
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-chevron {
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq-item.open .faq-chevron {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 20px 16px;
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary);
}

.faq-link:hover {
    text-decoration: underline;
}

/* ---- Section Title ---- */

.section-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-text);
}

/* ---- Footer ---- */

.footer {
    border-top: 1px solid var(--color-border);
    padding: 24px 0;
    margin-left: var(--sidebar-width);
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer p {
    font-size: 14px;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-size: 14px;
    color: var(--color-text-muted);
}

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

/* ---- Responsive ---- */

@media (max-width: 1024px) {
    .main-content {
        padding: 32px 32px 64px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 90;
        background: var(--color-bg);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        max-width: 100%;
        padding: 24px 20px 64px;
    }

    .footer {
        margin-left: 0;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .page-title {
        font-size: 26px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    /* Mobile overlay when sidebar is open */
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 80;
    }

    .sidebar-overlay.open {
        display: block;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 32px 16px;
    }

    .hero h1 {
        font-size: 24px;
    }

    .main-content {
        padding: 20px 16px 64px;
    }

    .content-section h2 {
        font-size: 20px;
    }

    .navbar-brand span:last-child {
        font-size: 16px;
    }
}

/* ---- Scrollbar ---- */

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.search-results::-webkit-scrollbar {
    width: 4px;
}

.search-results::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}