/* ==========================================================================
   CSS Design System & Styles for flutter.prstart.hu
   ========================================================================== */

/* Theme Variables */
:root[data-theme="dark"] {
    --bg-primary: #0A0F1D;
    --bg-secondary: #131C33;
    --bg-tertiary: #1B2644;
    --accent-primary: #00D2FF;
    --accent-secondary: #0072FF;
    --text-primary: #FFFFFF;
    --text-secondary: #A0AEC0;
    --border-color: rgba(0, 210, 255, 0.15);
    --border-hover: rgba(0, 210, 255, 0.35);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    --glow-color: rgba(0, 210, 255, 0.3);
    --code-bg: #1A1F2C;
}

:root[data-theme="light"] {
    --bg-primary: #F7FAFC;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #EDF2F7;
    --accent-primary: #0072FF;
    --accent-secondary: #00D2FF;
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --border-color: rgba(0, 114, 255, 0.15);
    --border-hover: rgba(0, 114, 255, 0.35);
    --card-shadow: 0 8px 24px 0 rgba(0, 0, 0, 0.05);
    --glow-color: rgba(0, 114, 255, 0.1);
    --code-bg: #F7FAFC;
}

/* Reset & Basics */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* App Layout Grid */
.app-layout {
    display: grid;
    grid-template-rows: 70px 1fr;
    height: 100vh;
    width: 100vw;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    z-index: 10;
    transition: background-color 0.3s ease;
}

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

.brand-icon {
    font-size: 24px;
    color: var(--accent-primary);
    filter: drop-shadow(0 0 8px var(--glow-color));
}

.brand-text h1 {
    font-size: 18px;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text span {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    margin-top: -2px;
}

/* Search Box */
.header-center {
    flex: 1;
    max-width: 600px;
    margin: 0 24px;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 48px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 12px var(--glow-color);
}

/* Header Right */
.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.icon-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 0 8px var(--glow-color);
}

/* Progress Container */
.progress-container {
    display: flex;
    flex-direction: column;
    width: 150px;
    gap: 4px;
}

.progress-details {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-weight: 600;
}

#progress_percentage {
    color: var(--accent-primary);
    font-weight: 800;
}

.progress-label {
    color: var(--text-secondary);
}

.progress-bar-outer {
    height: 6px;
    width: 100%;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-inner {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
    border-radius: 3px;
    transition: width 0.5s ease-out;
}

/* ==========================================================================
   MAIN WORKSPACE
   ========================================================================== */
.main-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    overflow: hidden;
    height: 100%;
}

/* ==========================================================================
   SIDEBAR
   ========================================================================== */
.sidebar {
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

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

.sidebar-header h2 {
    font-size: 16px;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.sidebar-nav {
    padding: 16px;
}

/* Navigation items */
.nav-section {
    margin-bottom: 20px;
}

.nav-section-title {
    font-family: 'Outfit', sans-serif;
    font-size: 12px;
    font-weight: 700;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    padding-left: 8px;
}

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

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.nav-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    color: #000;
    font-weight: 700;
    box-shadow: 0 4px 15px var(--glow-color);
}

.nav-link.active .nav-icon {
    color: #000;
}

.nav-link.completed .check-indicator {
    color: var(--success-color, #00FFCC);
}

.nav-link.active.completed .check-indicator {
    color: #000;
}

.nav-icon {
    font-size: 12px;
    color: var(--text-secondary);
    margin-right: 8px;
}

/* ==========================================================================
   CONTENT AREA
   ========================================================================== */
.content-area {
    background-color: var(--bg-primary);
    overflow-y: auto;
    padding: 40px;
    display: flex;
    justify-content: center;
}

.content-wrapper {
    width: 100%;
    max-width: 900px;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    height: 400px;
    color: var(--text-secondary);
}

.loading-content i {
    font-size: 40px;
    color: var(--accent-primary);
}

/* Rendered Markdown Styling */
.syllabus-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

/* Markdown Headers */
.syllabus-content h1 {
    font-size: 32px;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
    color: var(--accent-primary);
}

.syllabus-content h2 {
    font-size: 24px;
    margin-top: 36px;
    margin-bottom: 18px;
    color: var(--accent-primary);
    border-left: 4px solid var(--accent-secondary);
    padding-left: 12px;
}

.syllabus-content h3 {
    font-size: 18px;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.syllabus-content p {
    margin-bottom: 16px;
    font-size: 15.5px;
    color: var(--text-primary);
    opacity: 0.9;
}

.syllabus-content blockquote {
    background-color: var(--bg-tertiary);
    border-left: 4px solid var(--accent-primary);
    padding: 16px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 20px;
    font-style: italic;
}

/* Markdown Lists */
.syllabus-content ul, .syllabus-content ol {
    margin-left: 24px;
    margin-bottom: 20px;
}

.syllabus-content li {
    margin-bottom: 8px;
    font-size: 15px;
    color: var(--text-primary);
}

/* Markdown Tables */
.syllabus-content table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    margin-bottom: 30px;
    font-size: 14.5px;
}

.syllabus-content th, .syllabus-content td {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.syllabus-content th {
    background-color: var(--bg-tertiary);
    color: var(--accent-primary);
    font-weight: 700;
}

.syllabus-content tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Code & Snippets */
.syllabus-content pre {
    background-color: var(--code-bg) !important;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px !important;
    margin-bottom: 24px !important;
    overflow-x: auto;
}

.syllabus-content code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    background-color: var(--bg-tertiary);
    padding: 3px 6px;
    border-radius: 4px;
    color: var(--accent-primary);
}

.syllabus-content pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}

/* Task Checkbox */
.week-completion-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.week-completion-card:hover {
    border-color: var(--accent-primary);
}

.week-completion-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    cursor: pointer;
}

.week-completion-checkbox {
    width: 20px;
    height: 20px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 260px 1fr;
    }
}

@media (max-width: 768px) {
    .app-layout {
        grid-template-rows: auto 1fr;
    }
    
    .app-header {
        flex-direction: column;
        padding: 16px;
        gap: 16px;
    }
    
    .header-center {
        width: 100%;
        margin: 0;
    }
    
    .main-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none; /* Can add hamburger menu triggers later */
    }
    
    .content-area {
        padding: 20px;
    }
    
    .syllabus-content {
        padding: 24px;
    }
}

/* ==========================================================================
   HOMEPAGE & BLOGS LAYOUT STYLES
   ========================================================================== */

/* Hero Banner */
.hero-section {
    position: relative;
    padding: 50px 40px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #0c1630 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 40px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
    opacity: 0.15;
    filter: blur(40px);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(0, 210, 255, 0.1);
    border: 1px solid rgba(0, 210, 255, 0.2);
    border-radius: 50px;
    color: var(--accent-primary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-content h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 15px;
    background: linear-gradient(90deg, #FFFFFF, var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 800px;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Common Buttons */
.primary-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
    color: #FFFFFF;
    border: none;
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--glow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 210, 255, 0.5);
}

.secondary-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.secondary-btn:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* Home Layout Grid */
.home-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 30px;
}

.home-left, .home-right {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Cards Design */
.dashboard-card, .phases-section, .blogs-preview-card, .blogs-page-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
}

.dashboard-card h3, .phases-section h3, .blogs-preview-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* Dashboard Progress */
.dashboard-progress-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 10px;
    text-align: center;
}

.dashboard-stats div {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 8px;
}

.dashboard-stats span {
    display: block;
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.dashboard-stats label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Phase Items */
.phase-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.phase-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    padding: 15px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.phase-item:hover {
    transform: translateX(4px);
    border-color: var(--border-hover);
}

.phase-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-primary) 100%);
    border-radius: 50%;
    color: #FFFFFF;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    flex-shrink: 0;
}

.phase-info h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.phase-info p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Blog List & Preview */
.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.view-all-link {
    color: var(--accent-primary);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.view-all-link:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.blog-feed-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.blog-feed-item {
    padding: 15px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.blog-feed-item:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
}

.blog-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.blog-tag {
    color: var(--accent-primary);
    font-weight: 600;
}

.blog-feed-item h4 {
    font-size: 1.1rem;
    margin-bottom: 6px;
    line-height: 1.3;
}

.blog-feed-item p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.read-more {
    color: var(--accent-primary);
    font-size: 13px;
    font-weight: 600;
}

/* Blogs Page */
.blogs-page-container {
    padding: 30px;
    background: transparent;
    border: none;
    box-shadow: none;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.blogs-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.blog-card {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
    box-shadow: var(--card-shadow);
}

.blog-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: rgba(0, 210, 255, 0.08);
    border: 1px solid rgba(0, 210, 255, 0.15);
    border-radius: 12px;
    color: var(--accent-primary);
    font-size: 24px;
    flex-shrink: 0;
}

.blog-card-content {
    display: flex;
    flex-direction: column;
}

.blog-card-content h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.blog-card-content p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 15px;
}

.blog-card-link {
    color: var(--accent-primary);
    font-size: 14px;
    font-weight: 600;
    margin-top: auto;
}

/* Blog Navigation */
.blog-navigation-header {
    margin-bottom: 25px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

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

/* Responsive Home Grid */
@media (max-width: 992px) {
    .home-grid {
        grid-template-columns: 1fr;
    }
}