/* ==========================================================================
   CARROTCRAFT DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Theme Variables & Fonts
   -------------------------------------------------------------------------- */
:root {
    /* Fonts */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Quicksand', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;

    /* Common Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s ease;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
}

/* Dark Mode Variables (Default) */
[data-theme="dark"] {
    --bg-primary: #181513;
    --bg-secondary: #0f0d0c;
    --bg-card: rgba(30, 26, 23, 0.7);
    --bg-code: #201b18;
    
    --text-primary: #f0e6df;
    --text-secondary: #ad9a8d;
    --text-muted: #857467;
    
    --accent-carrot: #ff7a00;
    --accent-carrot-hover: #ff9d42;
    --accent-carrot-glow: rgba(255, 122, 0, 0.25);
    
    --color-success: #2ecc71;
    --color-success-bg: rgba(46, 204, 113, 0.1);
    --color-warning: #f1c40f;
    --color-warning-bg: rgba(241, 196, 15, 0.1);
    --color-danger: #e74c3c;
    --color-danger-bg: rgba(231, 76, 60, 0.1);
    --color-info: #3498db;
    --color-info-bg: rgba(52, 152, 219, 0.1);
    
    --border-color: rgba(255, 255, 255, 0.05);
    --border-color-focus: rgba(255, 122, 0, 0.4);
    
    --gradient-primary: linear-gradient(135deg, #ff7a00, #ff9f43);
    --gradient-sidebar: linear-gradient(180deg, #0f0d0c, #141110);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 25px rgba(255, 122, 0, 0.15);
}

/* Light Mode Variables */
[data-theme="light"] {
    --bg-primary: #fbf9f6;
    --bg-secondary: #f3ece4;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-code: #eae2d8;
    
    --text-primary: #3c322b;
    --text-secondary: #6e5e54;
    --text-muted: #948275;
    
    --accent-carrot: #e66000;
    --accent-carrot-hover: #ff7a00;
    --accent-carrot-glow: rgba(230, 96, 0, 0.15);
    
    --color-success: #27ae60;
    --color-success-bg: rgba(39, 174, 96, 0.1);
    --color-warning: #d35400;
    --color-warning-bg: rgba(211, 84, 0, 0.1);
    --color-danger: #c0392b;
    --color-danger-bg: rgba(192, 57, 43, 0.1);
    --color-info: #2980b9;
    --color-info-bg: rgba(41, 128, 185, 0.1);
    
    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-focus: rgba(230, 96, 0, 0.4);
    
    --gradient-primary: linear-gradient(135deg, #e66000, #ff7a00);
    --gradient-sidebar: linear-gradient(180deg, #f3ece4, #e9dfd3);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(60, 50, 43, 0.08);
    --shadow-lg: 0 16px 40px rgba(60, 50, 43, 0.12);
    --shadow-glow: 0 0 20px rgba(230, 96, 0, 0.1);
}

/* --------------------------------------------------------------------------
   2. Reset & Global Styles
   -------------------------------------------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

a:hover {
    color: var(--accent-carrot-hover);
}

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
}

/* --------------------------------------------------------------------------
   3. Sidebar Layout
   -------------------------------------------------------------------------- */
.sidebar {
    width: 320px;
    height: 100vh;
    background: var(--gradient-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    padding: 24px;
    transition: transform var(--transition-normal), background var(--transition-normal), border-color var(--transition-normal);
}

/* Logo Section */
.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.logo-img {
    width: 44px;
    height: 44px;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Progress Tracker */
.sidebar-progress {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.progress-info {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: progress-shimmer 2s infinite linear;
}

/* Search Bar */
.sidebar-search {
    position: relative;
    margin-bottom: 24px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    color: var(--text-muted);
    pointer-events: none;
}

.sidebar-search input {
    width: 100%;
    padding: 12px 36px 12px 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.sidebar-search input:focus {
    border-color: var(--border-color-focus);
    box-shadow: 0 0 12px var(--accent-carrot-glow);
}

.search-clear {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: var(--text-muted);
    cursor: pointer;
    display: none;
    user-select: none;
}

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

/* Navigation Menu */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-right: 4px;
}

/* Navigation Scrollbar styling */
.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}
.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}
.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.nav-section-title {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin: 16px 0 8px 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 122, 0, 0.05);
    color: var(--accent-carrot-hover);
    transform: translateX(4px);
}

.nav-item.active {
    background: var(--bg-card);
    border-color: var(--border-color-focus);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.nav-item.active .icon {
    transform: scale(1.1);
}

.nav-item .icon {
    font-size: 16px;
    display: inline-block;
    transition: transform var(--transition-fast);
}

/* Completed indicator in sidebar */
.completed-sub-item {
    position: relative;
}

.completed-sub-item::after {
    content: '✓';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-success);
    font-weight: bold;
    font-size: 14px;
}

/* Sidebar Footer & Theme Toggle */
.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    border-color: var(--border-color-focus);
    color: var(--text-primary);
    background: rgba(255, 122, 0, 0.05);
}

/* --------------------------------------------------------------------------
   4. Main Content Area
   -------------------------------------------------------------------------- */
.main-content {
    flex: 1;
    margin-left: 320px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 40px 60px;
    overflow-y: auto;
    transition: margin-left var(--transition-normal), padding var(--transition-normal);
}

.container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* --------------------------------------------------------------------------
   5. Markdown Render Styles (markdown-body)
   -------------------------------------------------------------------------- */
.markdown-body {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(12px);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.markdown-body h1, 
.markdown-body h2, 
.markdown-body h3, 
.markdown-body h4 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-weight: 700;
    margin-top: 24px;
    margin-bottom: 16px;
    line-height: 1.25;
}

.markdown-body h1 {
    font-size: 38px;
    font-weight: 800;
    margin-top: 0;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 12px;
    position: relative;
}

.markdown-body h1::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100px;
    height: 2px;
    background: var(--gradient-primary);
}

.markdown-body h2 {
    font-size: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.markdown-body h3 {
    font-size: 20px;
}

.markdown-body p, 
.markdown-body ul, 
.markdown-body ol {
    margin-bottom: 18px;
    color: var(--text-secondary);
}

.markdown-body ul, 
.markdown-body ol {
    padding-left: 24px;
}

.markdown-body li {
    margin-bottom: 8px;
}

.markdown-body strong {
    color: var(--text-primary);
    font-weight: 700;
}

.markdown-body hr {
    height: 1px;
    background-color: var(--border-color);
    border: none;
    margin: 32px 0;
}

/* --------------------------------------------------------------------------
   6. Alerts post-processing styles
   -------------------------------------------------------------------------- */
.alert-block {
    border-left: 4px solid transparent;
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin: 24px 0;
    box-shadow: var(--shadow-sm);
}

.alert-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    font-weight: 700;
    font-family: var(--font-heading);
    font-size: 15px;
}

.alert-content p {
    margin-bottom: 0;
    color: var(--text-primary);
    font-size: 14.5px;
}

/* Specific Alerts configurations */
.alert-note {
    background-color: var(--color-info-bg);
    border-color: var(--color-info);
}
.alert-note .alert-title {
    color: var(--color-info);
}

.alert-tip {
    background-color: var(--color-success-bg);
    border-color: var(--color-success);
}
.alert-tip .alert-title {
    color: var(--color-success);
}

.alert-important {
    background-color: var(--color-warning-bg);
    border-color: var(--color-warning);
}
.alert-important .alert-title {
    color: var(--color-warning);
}

.alert-warning {
    background-color: var(--color-warning-bg);
    border-color: var(--color-warning);
}
.alert-warning .alert-title {
    color: var(--color-warning);
}

.alert-caution {
    background-color: var(--color-danger-bg);
    border-color: var(--color-danger);
}
.alert-caution .alert-title {
    color: var(--color-danger);
}

/* --------------------------------------------------------------------------
   7. Code Snippets & Copy Buttons
   -------------------------------------------------------------------------- */
.markdown-body code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background-color: var(--bg-code);
    padding: 3px 6px;
    border-radius: var(--radius-sm);
    color: var(--accent-carrot-hover);
    transition: background-color var(--transition-fast);
}

/* Code block container */
.code-wrapper {
    position: relative;
    margin: 20px 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.markdown-body pre {
    background-color: var(--bg-code) !important;
    padding: 20px !important;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin: 0 !important;
}

.markdown-body pre code {
    background-color: transparent;
    padding: 0;
    border-radius: 0;
    color: inherit;
    font-size: 14px;
}

/* Copy Button on Code block */
.copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(30, 26, 23, 0.85);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    backdrop-filter: blur(4px);
}

.code-wrapper:hover .copy-btn {
    opacity: 1;
    pointer-events: auto;
}

.copy-btn:hover {
    color: var(--accent-carrot-hover);
    border-color: var(--border-color-focus);
    transform: scale(1.03);
}

.copy-btn.copied {
    color: var(--color-success) !important;
    border-color: var(--color-success) !important;
}

/* --------------------------------------------------------------------------
   8. Loader & Error States
   -------------------------------------------------------------------------- */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 0;
    gap: 16px;
    color: var(--text-secondary);
}

.carrot-loader {
    font-size: 44px;
    animation: carrot-spin 1.5s infinite ease-in-out;
}

.error-box {
    background-color: var(--color-danger-bg);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-md);
    padding: 24px;
    color: var(--text-primary);
}

.error-box h2 {
    color: var(--color-danger);
    margin-top: 0;
    margin-bottom: 8px;
}

/* --------------------------------------------------------------------------
   9. Completion Cards
   -------------------------------------------------------------------------- */
.completion-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 32px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(12px);
    transition: border-color var(--transition-normal);
}

.checkbox-container {
    display: flex;
    align-items: center;
    position: relative;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    user-select: none;
    color: var(--text-primary);
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: relative;
    height: 24px;
    width: 24px;
    background-color: rgba(0, 0, 0, 0.2);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    margin-right: 16px;
    transition: all var(--transition-fast);
}

.checkbox-container:hover input ~ .checkmark {
    border-color: var(--border-color-focus);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--color-success);
    border-color: var(--color-success);
    box-shadow: 0 0 10px rgba(46, 204, 113, 0.4);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 6px;
    height: 11px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.label-text {
    transition: color var(--transition-fast);
}

.checkbox-container input:checked ~ .label-text {
    color: var(--color-success);
}

/* --------------------------------------------------------------------------
   10. Mobile Header
   -------------------------------------------------------------------------- */
.mobile-header {
    display: none;
    height: 64px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 150;
    box-shadow: var(--shadow-sm);
}

.menu-toggle-btn {
    width: 30px;
    height: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: transparent;
    border: none;
    cursor: pointer;
}

.menu-toggle-btn .bar {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.mobile-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 20px;
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mobile-logo .logo-img {
    width: 28px;
    height: 28px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
    backdrop-filter: blur(4px);
}

/* --------------------------------------------------------------------------
   11. Animations
   -------------------------------------------------------------------------- */
@keyframes carrot-spin {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(15deg) scale(1.15); }
    100% { transform: rotate(0deg) scale(1); }
}

@keyframes progress-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.anim-bounce:hover {
    animation: bounce 0.8s infinite alternate;
}

@keyframes bounce {
    0% { transform: translateY(0); }
    100% { transform: translateY(-8px); }
}

/* --------------------------------------------------------------------------
   12. Responsive Design Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .mobile-header {
        display: flex;
    }
    
    .sidebar {
        transform: translateX(-100%);
        box-shadow: none;
        height: calc(100vh - 64px);
        top: 64px;
    }
    
    .sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
        padding: 96px 20px 40px 20px; /* Top padding is larger to account for fixed mobile header */
    }
    
    .markdown-body {
        padding: 30px 24px;
    }
    
    .markdown-body h1 {
        font-size: 28px;
    }
    
    /* Burger transformation when active */
    .menu-toggle-btn.active .bar:nth-child(1) {
        transform: translateY(10.5px) rotate(45deg);
    }
    .menu-toggle-btn.active .bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle-btn.active .bar:nth-child(3) {
        transform: translateY(-10.5px) rotate(-45deg);
    }
}