/* ==========================================================================
   雨落倾城'S BLOG | 新关于我 CSS 样式表 (滚动与浅色主题版)
   Features: Vertical Scrolling, Scroll-Padding, Light Theme, Text Hobbies, Glass UI
   ========================================================================== */

/* --- 1. CSS Reset & Base Setup --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Offset for sticky navbar when scrolling to anchors */
    font-size: 16px;
    overflow-x: hidden;
}

/* Theme Design Tokens */
:root {
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
}

/* Light Theme Variables (Default) */
.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.72);
    --border-glass: rgba(0, 0, 0, 0.06);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --accent-primary: #0ea5e9;    /* Sky Blue */
    --accent-secondary: #3b82f6;  /* Royal Blue */
    --accent-tertiary: #8b5cf6;   /* Violet */
    
    --glow-color: rgba(14, 165, 233, 0.15);
    --glow-secondary: rgba(139, 92, 246, 0.12);
    --scrollbar-thumb: rgba(0, 0, 0, 0.1);
    --scrollbar-track: rgba(0, 0, 0, 0.02);
    
    --timeline-line: rgba(0, 0, 0, 0.08);
    --nav-bg: rgba(248, 250, 252, 0.85);
}

/* Dark Theme Variables */
.dark-theme {
    --bg-primary: #09090e;
    --bg-secondary: #11111e;
    --bg-glass: rgba(17, 17, 30, 0.75);
    --border-glass: rgba(255, 255, 255, 0.06);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    
    --accent-primary: #00f2fe;    /* Neon Cyan */
    --accent-secondary: #4facfe;  /* Blue */
    --accent-tertiary: #f100ff;   /* Magenta */
    
    --glow-color: rgba(0, 242, 254, 0.25);
    --glow-secondary: rgba(241, 0, 255, 0.2);
    --scrollbar-thumb: rgba(255, 255, 255, 0.1);
    --scrollbar-track: rgba(0, 0, 0, 0.2);
    
    --timeline-line: rgba(255, 255, 255, 0.08);
    --nav-bg: rgba(9, 9, 14, 0.85);
}

body {
    font-family: 'Outfit', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--transition-slow), color var(--transition-normal);
    line-height: 1.625;
    -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* --- 2. Interactive Background Canvas --- */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* --- 3. Header & Navigation Bar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    transition: background-color var(--transition-slow), border var(--transition-normal);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.875rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 0.75rem;
}

.nav-logo-img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 2px solid var(--accent-primary);
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.nav-logo a:hover .nav-logo-img {
    transform: rotate(360deg);
}

.nav-logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.25rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width var(--transition-normal);
    border-radius: 2px;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

/* Theme Switcher Button */
.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.02);
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 8px var(--glow-color);
    background-color: rgba(255, 255, 255, 0.5);
}

.dark-theme .sun-icon { display: block; }
.dark-theme .moon-icon { display: none; }
.light-theme .sun-icon { display: none; }
.light-theme .moon-icon { display: block; }

/* Mobile Navigation Toggle */
.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 101;
}

.mobile-nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

/* Mobile active button layout toggle */
.mobile-nav-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-nav-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- 4. Main & Vertical Scrolling Section Layout --- */
.main-content {
    position: relative;
    z-index: 1;
    max-width: 960px;
    margin: 0 auto;
    padding: 5rem 1.5rem 2rem;
}

.section {
    width: 100%;
    padding: 6rem 0; /* Generous vertical spacing between sections */
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 1; /* Always visible for scrolling flow */
}

/* Glass Card Base Style */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: var(--shadow-md);
    transition: border var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-slow);
}

.glass-card:hover {
    border-color: rgba(14, 165, 233, 0.2);
    box-shadow: var(--shadow-lg), 0 0 24px var(--glow-color);
}

.dark-theme .glass-card:hover {
    border-color: rgba(0, 242, 254, 0.2);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 242, 254, 0.05);
}

/* Section Common Header */
.section-title {
    font-size: 2.1rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
}

.title-underline {
    width: 50px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    margin: 0 auto 3rem;
    border-radius: 2px;
}

/* --- 5. Hero / Home Section --- */
.hero-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

/* Glowing Rotating Avatar rings */
.hero-avatar-area {
    position: relative;
    width: 200px;
    height: 200px;
    margin-bottom: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-glow-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid transparent;
}

.ring-1 {
    width: 200px;
    height: 200px;
    border-left-color: var(--accent-primary);
    border-right-color: var(--accent-tertiary);
    animation: rotateRing 8s linear infinite;
}

.ring-2 {
    width: 188px;
    height: 188px;
    border-top-color: var(--accent-secondary);
    border-bottom-color: var(--accent-primary);
    animation: rotateRingOpposite 6s linear infinite;
}

.ring-3 {
    width: 176px;
    height: 176px;
    border-right-color: var(--accent-secondary);
    border-left-color: var(--accent-tertiary);
    animation: rotateRing 12s linear infinite;
}

.avatar-container {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--bg-primary);
    box-shadow: 0 0 20px var(--glow-color);
    z-index: 2;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), box-shadow var(--transition-normal);
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.hero-avatar-area:hover .avatar-container {
    transform: scale(1.03) rotate(360deg);
    box-shadow: 0 0 30px var(--accent-primary), 0 0 15px var(--accent-tertiary);
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-primary) 50%, var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle-container {
    height: 1.8rem;
    margin-bottom: 3rem;
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.typing-cursor {
    color: var(--accent-primary);
    animation: blinkCursor 0.8s infinite;
    font-weight: 700;
    margin-left: 3px;
}

/* --- Premium Central CTA Button --- */
.hero-cta-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.premium-blog-btn {
    position: relative;
    text-decoration: none;
    display: inline-block;
    border-radius: 50px; /* pill shape */
    padding: 1.5px; /* for gradient border width */
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.1), 0 0 0 1px rgba(14, 165, 233, 0.04);
    transition: all var(--transition-normal);
    cursor: pointer;
    overflow: hidden;
}

.premium-blog-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    opacity: 0.5;
    filter: blur(15px);
    z-index: 0;
    transition: opacity var(--transition-normal);
}

.btn-content-wrapper {
    position: relative;
    z-index: 2;
    background-color: var(--bg-secondary);
    padding: 1rem 3rem;
    border-radius: 49px;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    color: var(--text-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.dark-theme .btn-content-wrapper {
    background-color: #0c0c16;
}

.btn-icon-left {
    color: var(--accent-primary);
    transition: transform var(--transition-normal), color var(--transition-normal);
}

.btn-text-main {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 1px;
    transition: color var(--transition-normal);
}

.btn-text-sub {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    font-family: 'Outfit', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-left: 1px solid var(--border-glass);
    padding-left: 1rem;
    display: inline-block;
    transition: border-color var(--transition-normal), color var(--transition-normal);
}

.btn-icon-right {
    color: var(--text-muted);
    transition: transform var(--transition-normal), color var(--transition-normal);
}

/* Hover Dynamics */
.premium-blog-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(14, 165, 233, 0.25), 0 0 0 1px rgba(14, 165, 233, 0.08);
}

.premium-blog-btn:hover::before {
    opacity: 0.95;
}

.premium-blog-btn:hover .btn-content-wrapper {
    background-color: transparent;
    color: #ffffff; /* Contrast text on gradient background */
}

.premium-blog-btn:hover .btn-icon-left {
    color: #ffffff;
    transform: scale(1.15) rotate(-10deg);
}

.premium-blog-btn:hover .btn-text-sub {
    color: rgba(255, 255, 255, 0.75);
    border-color: rgba(255, 255, 255, 0.25);
}

.premium-blog-btn:hover .btn-icon-right {
    color: #ffffff;
    transform: translateX(5px);
}

/* --- 6. Skills Section --- */
.skills-layout {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 3rem;
    align-items: center;
}

.skills-bars-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    font-weight: 600;
}

.skill-name {
    color: var(--text-primary);
}

.skill-percentage {
    color: var(--accent-primary);
}

.skill-bar-bg {
    width: 100%;
    height: 8px;
    background-color: rgba(0, 0, 0, 0.04);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-glass);
}

.dark-theme .skill-bar-bg {
    background-color: rgba(255, 255, 255, 0.04);
}

.skill-bar-fill {
    height: 100%;
    border-radius: 4px;
    width: 0; /* Animated in JS */
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Customized Gradients for Skills */
.fill-easylanguage { background: linear-gradient(90deg, #10b981, #059669); }
.fill-linux { background: linear-gradient(90deg, #0ea5e9, #3b82f6); }
.fill-web { background: linear-gradient(90deg, #3b82f6, #6366f1); }
.fill-social { background: linear-gradient(90deg, #f43f5e, #e11d48); }
.fill-exams { background: linear-gradient(90deg, #8b5cf6, #7c3aed); }
.fill-video { background: linear-gradient(90deg, #ec4899, #db2777); }
.fill-office { background: linear-gradient(90deg, #f59e0b, #d97706); }

.skills-summary-box {
    background: rgba(0, 0, 0, 0.01);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 2.25rem;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.dark-theme .skills-summary-box {
    background: rgba(255, 255, 255, 0.01);
}

.summary-icon-wrapper {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    box-shadow: 0 0 16px rgba(14, 165, 233, 0.08);
}

.skills-summary-box h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: 0.5px;
}

.skills-summary-text {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* --- 7. Experience Timeline Section --- */
.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 2rem;
}

/* Left Vertical Line */
.timeline-container::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 5px;
    bottom: 5px;
    width: 2px;
    background: var(--timeline-line);
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -32px;
    top: 8px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 3px solid var(--accent-primary);
    box-shadow: 0 0 8px var(--glow-color);
    z-index: 2;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.timeline-item:hover .timeline-dot {
    background-color: var(--accent-tertiary);
    border-color: var(--accent-tertiary);
    box-shadow: 0 0 8px var(--glow-secondary);
    transform: scale(1.3);
}

.timeline-content {
    padding: 1.75rem 2rem;
    margin-left: 0.75rem;
    transform: translateY(20px);
    opacity: 0; /* Hidden initially, revealed by JS scroll observer */
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Scroll reveal trigger class */
.timeline-content.revealed {
    transform: translateY(0);
    opacity: 1;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-tag {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-primary);
    background-color: rgba(14, 165, 233, 0.06);
    padding: 0.2rem 0.7rem;
    border-radius: 20px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* --- 8. Hobbies Section (Redesigned Text-Only Hobbies) --- */
.hobbies-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.text-hobby-card {
    padding: 2.25rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    height: 100%;
}

.hobby-header-area {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 1.5rem;
}

/* Elegant Icon badges */
.hobby-icon-box {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-normal);
}

.box-cyan {
    background-color: rgba(14, 165, 233, 0.08);
    color: #0ea5e9;
    border: 1px solid rgba(14, 165, 233, 0.15);
}

.box-blue {
    background-color: rgba(59, 130, 246, 0.08);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.box-purple {
    background-color: rgba(139, 92, 246, 0.08);
    color: #8b5cf6;
    border: 1px solid rgba(139, 92, 246, 0.15);
}

.hobby-badge {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    font-family: 'Outfit', sans-serif;
    letter-spacing: 0.5px;
}

.hobby-details {
    width: 100%;
}

.hobby-details h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.hobby-divider {
    width: 30px;
    height: 3px;
    background-color: var(--border-glass);
    margin-bottom: 1.25rem;
    border-radius: 2px;
    transition: width var(--transition-normal);
}

.hobby-details p {
    color: var(--text-secondary);
    font-size: 0.925rem;
    line-height: 1.6;
}

/* Redesigned Card hover dynamics */
.text-hobby-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md), 0 0 15px var(--glow-color);
}

.text-hobby-card:hover .hobby-icon-box {
    transform: scale(1.1) rotate(10deg);
}

.text-hobby-card:hover .hobby-divider {
    width: 60px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.text-hobby-card:hover.glass-card {
    border-color: var(--accent-primary);
}

/* --- 9. Contact & Footer Section --- */
.contact-card {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
}

.contact-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.contact-item-card {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2.25rem 1.25rem;
    transition: all var(--transition-normal);
}

.contact-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: #ffffff;
    transition: transform var(--transition-normal);
}

.qq-icon-bg { background: linear-gradient(135deg, #0ea5e9, #3b82f6); }
.blog-icon-bg { background: linear-gradient(135deg, #8b5cf6, #6366f1); }
.email-icon-bg { background: linear-gradient(135deg, #06b6d4, #0ea5e9); }

.contact-item-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.contact-value {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.contact-action {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    transition: transform var(--transition-fast);
}

.contact-item-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md), 0 0 15px var(--glow-color);
}

.contact-item-card:hover .contact-icon {
    transform: scale(1.1) rotate(8deg);
}

.contact-item-card:hover .contact-action {
    transform: translateX(3px);
}

/* Footer elements */
.footer-area {
    margin-top: 2rem;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background: var(--timeline-line);
    margin-bottom: 2rem;
}

.copyright {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.copyright a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
}

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

.footer-tagline {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

/* --- 10. Custom Toast Notification --- */
.toast-notification {
    position: fixed;
    bottom: -100px; /* Hidden initially */
    right: 24px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid #ef4444;
    border-radius: 16px;
    padding: 1.25rem;
    width: 330px;
    box-shadow: 0 8px 28px rgba(239, 68, 68, 0.1), var(--shadow-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    opacity: 0;
    pointer-events: none;
    transition: bottom 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
    overflow: hidden;
}

.toast-notification.show {
    bottom: 24px;
    opacity: 1;
    pointer-events: auto;
}

.toast-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-warning-icon {
    color: #ef4444;
}

.toast-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.toast-body {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.toast-progressbar {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: rgba(239, 68, 68, 0.15);
}

.toast-progress-fill {
    height: 100%;
    width: 100%;
    background-color: #ef4444;
    transition: width 4s linear;
}

/* --- 11. Keyframe Animations --- */
@keyframes rotateRing {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes rotateRingOpposite {
    0% { transform: rotate(360deg); }
    100% { transform: rotate(0deg); }
}

@keyframes blinkCursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* --- 12. Media Queries (Responsive Design) --- */
@media (max-width: 992px) {
    .hobbies-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
    
    .skills-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .skills-summary-box {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 4.5rem 1rem 1.5rem;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .glass-card {
        padding: 2rem 1.5rem;
    }
    
    .hero-title {
        font-size: 2.15rem;
    }
    
    .hero-subtitle-container {
        font-size: 1.05rem;
        height: 1.5rem;
    }
    
    /* Navigation Menu for Mobile */
    .mobile-nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--nav-bg);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.08);
        z-index: 99;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: right var(--transition-slow);
    }
    
    .nav-menu.mobile-open {
        right: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    /* Hobbies Grid */
    .hobbies-grid {
        grid-template-columns: 1fr;
    }
    
    /* Contact Cards */
    .contact-links-grid {
        grid-template-columns: 1fr;
        gap: 1.15rem;
    }
    
    /* Timeline adjustments */
    .timeline-container {
        padding-left: 1.25rem;
    }
    
    .timeline-dot {
        left: -26px;
    }
    
    .timeline-content {
        padding: 1.5rem 1.25rem;
    }
}

@media (max-width: 480px) {
    .hero-avatar-area {
        width: 160px;
        height: 160px;
    }
    
    .avatar-container {
        width: 130px;
        height: 130px;
    }
    
    .ring-1 { width: 160px; height: 160px; }
    .ring-2 { width: 150px; height: 150px; }
    .ring-3 { width: 140px; height: 140px; }
    
    .hero-btn {
        width: 100%;
        justify-content: center;
    }
    
    .toast-notification {
        width: calc(100% - 32px);
        right: 16px;
    }
}