/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors */
    --primary: #0A192F;
    --primary-light: #112240;
    --primary-lighter: #1D3557;
    --accent: #FFB300;
    --accent-hover: #FFC107;
    --accent-glow: rgba(255, 179, 0, 0.3);
    --text-primary: #E6F1FF;
    --text-secondary: #8892B0;
    --text-muted: #495670;
    --white: #FFFFFF;
    --black: #000000;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-max: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ===================================
   Loader
   =================================== */
.loader {
    position: fixed;
    inset: 0;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-dots {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 16px;
}

.loader-dots span {
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    animation: bounce 1.4s ease-in-out infinite;
}

.loader-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loader-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

.loader-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===================================
   Navigation
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: transparent;
    transition: var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(16px, 3vw, 40px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo-bracket {
    color: var(--accent);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.8vw, 24px);
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.825rem;
    color: var(--text-secondary);
    position: relative;
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--accent);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-fast);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 20px !important;
    border: 1px solid var(--accent) !important;
    border-radius: 4px;
    color: var(--accent) !important;
}

.nav-cta:hover {
    background: rgba(255, 179, 0, 0.1) !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-resume-btn {
    display: inline-flex !important;
    align-items: center;
    gap: 6px;
    padding: 8px 16px !important;
    border: 1px solid var(--accent) !important;
    border-radius: 4px;
    color: var(--accent) !important;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav-resume-btn svg {
    color: var(--accent);
    transition: transform var(--transition-fast);
}

.nav-resume-btn:hover {
    background: var(--accent) !important;
    color: var(--primary) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px var(--accent-glow);
}

.nav-resume-btn:hover svg {
    color: var(--primary);
    transform: translateY(1px);
}

.nav-resume-btn::after {
    display: none !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10, 25, 47, 0.98);
    backdrop-filter: blur(10px);
    padding: 30px 40px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 999;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-links {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.mobile-links a {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(ellipse at 70% 30%, rgba(255, 179, 0, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 40px;
    width: 100%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent);
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.2s;
}

.hero-headline {
    font-family: var(--font-mono);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-headline .line {
    display: block;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.hero-headline .line:first-child {
    animation-delay: 0.4s;
}

.hero-headline .line.accent {
    color: var(--accent);
    animation-delay: 0.6s;
}

.hero-subheadline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.8s;
}

.badge {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 6px 12px;
    background: var(--primary-light);
    border-radius: 4px;
    border: 1px solid var(--primary-lighter);
}

.separator {
    color: var(--text-muted);
}

.hero-summary {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 620px;
    margin-bottom: 36px;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.9s;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 1.1s;
}

/* Buttons */
.btn {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 14px 28px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--accent-glow);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1rem;
}

.btn-large svg {
    width: 20px;
    height: 20px;
    transition: var(--transition-fast);
}

.btn-large:hover svg {
    transform: translateX(4px);
}

/* Hero Visual */
.hero-visual {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 20px;
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 1.2s;
}

/* Terminal */
.terminal {
    background: var(--primary-light);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--primary-lighter);
    box-shadow: var(--shadow-card);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--primary-lighter);
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27CA40; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 20px;
    max-height: 400px;
    overflow: hidden;
}

.code {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.code .comment { color: #546E7A; }
.code .keyword { color: #C792EA; }
.code .class-name { color: #FFCB6B; }
.code .function { color: #82AAFF; }
.code .param { color: #F07178; }
.code .string { color: #C3E88D; }
.code .builtin { color: #82AAFF; }

.code .cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Nature Montage */
.nature-montage {
    display: flex;
    align-items: center;
}

.montage-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.montage-item {
    opacity: 0;
    animation: fadeInScale 0.5s ease forwards;
}

.montage-item.item-1 { animation-delay: 1.4s; }
.montage-item.item-2 { animation-delay: 1.5s; }
.montage-item.item-3 { animation-delay: 1.6s; }
.montage-item.item-4 { animation-delay: 1.7s; }

.nature-card {
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: var(--transition-base);
}

.nature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(255, 179, 0, 0.1);
}

.nature-icon {
    width: 32px;
    height: 32px;
    margin: 0 auto 8px;
    color: var(--accent);
}

.nature-card span {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nature-card small {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.brand-card {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-lighter));
    padding: 24px;
}

.brand-name {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 4px;
}

.brand-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.item-3 .nature-card {
    grid-column: span 1;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
    animation-delay: 2s;
}

.scroll-indicator span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    color: var(--text-muted);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(8px); }
    60% { transform: translateY(4px); }
}

/* ===================================
   Section Styles
   =================================== */
.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 40px;
}

.section-header {
    margin-bottom: 60px;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-mono);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
}

/* ===================================
   Skills Section
   =================================== */
.skills {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-category {
    background: var(--primary);
    border: 1px solid var(--primary-lighter);
    border-radius: 12px;
    padding: 32px;
    transition: var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: var(--shadow-hover);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.category-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 179, 0, 0.1);
    border-radius: 12px;
}

.category-icon svg {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.category-title {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 8px 14px;
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 6px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.skill-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.skill-tag.highlight {
    background: rgba(255, 179, 0, 0.1);
    border-color: var(--accent);
    color: var(--accent);
    cursor: pointer;
}

.skill-tag.highlight:hover {
    background: rgba(255, 179, 0, 0.2);
    transform: translateY(-2px);
}

a.skill-tag {
    text-decoration: none;
}

/* Skills Auxiliary Bar */
.skills-auxiliary {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--primary);
    border: 1px solid var(--primary-lighter);
    border-radius: 12px;
    padding: 24px 30px;
    transition: var(--transition-base);
}

.skills-auxiliary:hover {
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.aux-item {
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.9rem;
}

.aux-label {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--accent);
    min-width: 170px;
}

.aux-value {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===================================
   Projects Section
   =================================== */
.projects {
    padding: var(--section-padding) 0;
    background: var(--primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition-base);
    text-decoration: none;
    display: block;
}

.project-card:hover {
    transform: translateY(-12px);
    border-color: var(--accent);
    box-shadow: var(--shadow-hover);
}

.project-preview {
    background: var(--primary);
    border-bottom: 1px solid var(--primary-lighter);
}

.browser-frame {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--primary-lighter);
}

.browser-dots {
    display: flex;
    gap: 6px;
}

.browser-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-lighter);
}

.browser-dots span:first-child { background: #FF5F56; }
.browser-dots span:nth-child(2) { background: #FFBD2E; }
.browser-dots span:last-child { background: #27CA40; }

.browser-url {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    background: var(--primary);
    padding: 4px 12px;
    border-radius: 4px;
    flex: 1;
}

/* Iframe Container */
.iframe-container {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--primary-lighter);
}

.iframe-container iframe {
    width: 200%;
    height: 400%;
    border: none;
    transform: scale(0.5);
    transform-origin: top left;
    pointer-events: none;
}

.iframe-overlay {
    position: absolute;
    inset: 0;
    background: transparent;
    cursor: pointer;
}

.project-card:hover .iframe-container {
    box-shadow: inset 0 0 0 2px var(--accent);
}

.project-info {
    padding: 24px;
}

.project-header-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 4px;
}

.project-title {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    background: rgba(255, 179, 0, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid rgba(255, 179, 0, 0.2);
}

.project-subtitle {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.project-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}

.project-stack-tags {
    margin: 12px 0 16px;
    gap: 8px;
}

.project-stack-tags span {
    font-size: 0.72rem;
    padding: 4px 10px;
}

.project-link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.project-card:hover .project-link {
    letter-spacing: 0.5px;
}

/* Project Mini Terminal */
.project-mini-terminal {
    height: 100%;
    padding: 20px 24px;
    background: #06111f;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    line-height: 1.5;
}

.project-mini-terminal .mini-terminal-line {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-mini-terminal .prompt {
    color: var(--accent);
    font-weight: 600;
    margin-right: 6px;
}

.project-mini-terminal .success {
    color: #4ade80;
}

.project-mini-terminal .info {
    color: #38bdf8;
}

/* ===================================
   Books Section
   =================================== */
.books {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
}

.books-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.books-info .books-count {
    font-family: var(--font-mono);
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}

.books-info h3 {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.books-info p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.books-display {
    display: flex;
    justify-content: center;
}

.book-stack {
    display: flex;
    gap: 12px;
    perspective: 1000px;
}

.book {
    width: 96px;
    height: 142px;
    position: relative;
    transform-style: preserve-3d;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: block;
    text-decoration: none;
    cursor: pointer;
}

.book:hover {
    transform: translateY(-16px) rotateY(-20deg) scale(1.08);
    z-index: 10;
}

.book-spine {
    position: absolute;
    left: 0;
    top: 0;
    width: 14px;
    height: 100%;
    transform: rotateY(-90deg) translateX(-7px);
    transform-origin: right;
    box-shadow: inset 1px 0 2px rgba(255, 255, 255, 0.2);
}

.book-cover {
    width: 100%;
    height: 100%;
    border-radius: 0 4px 4px 0;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
    box-shadow: -4px 10px 24px rgba(0, 0, 0, 0.55), 0 2px 4px rgba(0, 0, 0, 0.3);
}

.book-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, 
        rgba(0, 0, 0, 0.35) 0%, 
        rgba(255, 255, 255, 0.22) 15%, 
        transparent 35%, 
        rgba(0, 0, 0, 0.25) 100%
    );
    pointer-events: none;
}

.book-title {
    display: none;
}

/* Individual Book Spines & Covers in Top Stack */
.book-1 .book-cover { background-image: url('images/books/organize-your-brand.jpg'); }
.book-1 .book-spine { background: linear-gradient(90deg, #132a1a, #2b613c); }

.book-2 .book-cover { background-image: url('images/books/trading-journal.jpg'); }
.book-2 .book-spine { background: linear-gradient(90deg, #3d2904, #996e08); }

.book-3 .book-cover { background-image: url('images/books/anger-management.jpg'); }
.book-3 .book-spine { background: linear-gradient(90deg, #380d19, #831838); }

.book-4 .book-cover { background-image: url('images/books/let-him-blog.jpg'); }
.book-4 .book-spine { background: linear-gradient(90deg, #092c47, #156291); }

.book-5 .book-cover { background-image: url('images/books/prayer-journal.jpg'); }
.book-5 .book-spine { background: linear-gradient(90deg, #1d1238, #4f2f8a); }

/* Books Category Filter Bar */
.books-filter-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 9px 20px;
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--primary);
    font-weight: 600;
    box-shadow: 0 4px 14px var(--accent-glow);
}

/* Books Catalog Grid */
.books-catalog-grid {
    margin-top: 36px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.book-card {
    background: var(--primary);
    border: 1px solid var(--primary-lighter);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-base);
    position: relative;
}

.book-card.hidden {
    display: none;
}

.book-card:hover {
    border-color: var(--accent);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
}

/* Mockup Presentation Stage */
.book-mockup-stage {
    position: relative;
    background: radial-gradient(circle at 50% 65%, rgba(255, 179, 0, 0.09), transparent 70%), #06111f;
    padding: 32px 20px 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 800px;
    border-bottom: 1px solid var(--primary-lighter);
}

.book-3d-wrap {
    position: relative;
    width: 140px;
    aspect-ratio: 1 / 1.48;
    transform-style: preserve-3d;
    transform: rotateY(-8deg) rotateX(2deg);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.45s ease;
    box-shadow: -8px 12px 24px rgba(0, 0, 0, 0.65), -2px 4px 8px rgba(0, 0, 0, 0.4);
    border-radius: 0 4px 4px 0;
}

.book-card:hover .book-3d-wrap {
    transform: rotateY(-14deg) rotateX(4deg) translateY(-10px) scale(1.05);
    box-shadow: -14px 22px 36px rgba(0, 0, 0, 0.75), 0 6px 24px var(--accent-glow);
}

.book-3d-cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0 4px 4px 0;
}

/* Spine crease realism */
.book-3d-crease {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 14px;
    background: linear-gradient(90deg, 
        rgba(0, 0, 0, 0.45) 0%, 
        rgba(255, 255, 255, 0.22) 20%, 
        rgba(0, 0, 0, 0.2) 40%, 
        transparent 100%
    );
    pointer-events: none;
}

/* Gloss highlight */
.book-3d-gloss {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, 
        rgba(255, 255, 255, 0.16) 0%, 
        rgba(255, 255, 255, 0.04) 25%, 
        transparent 50%
    );
    border-radius: 0 4px 4px 0;
    pointer-events: none;
}

/* Page edge on right side */
.book-3d-page-edge {
    position: absolute;
    right: -4px;
    top: 2px;
    bottom: 2px;
    width: 4px;
    background: repeating-linear-gradient(
        to bottom,
        #e5e5e5 0px,
        #d4d4d4 1px,
        #ffffff 2px
    );
    border-radius: 0 2px 2px 0;
    transform: rotateY(40deg);
    transform-origin: left;
}

.book-format-pill {
    position: absolute;
    top: 14px;
    right: 14px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--accent);
    background: rgba(10, 25, 47, 0.88);
    backdrop-filter: blur(4px);
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid rgba(255, 179, 0, 0.3);
}

.book-card-content {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.book-card-category {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.book-card-title {
    font-family: var(--font-mono);
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.book-card-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 20px;
    flex: 1;
}

.book-card-actions {
    margin-top: auto;
}

.btn-book-amazon {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 10px 16px;
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    transition: var(--transition-fast);
    text-decoration: none;
}

.btn-book-amazon:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-book-amazon svg {
    color: var(--accent);
    transition: color var(--transition-fast);
}

.btn-book-amazon:hover svg {
    color: var(--primary);
}

.btn-book-amazon .arrow {
    transition: transform var(--transition-fast);
}

.btn-book-amazon:hover .arrow {
    transform: translateX(3px);
}

.books-all-cta {
    margin-top: 40px;
    text-align: center;
}

/* ===================================
   Work Section
   =================================== */
.work {
    padding: var(--section-padding) 0;
    background: var(--primary-light);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.work-card {
    background: var(--primary);
    border: 1px solid var(--primary-lighter);
    border-radius: 16px;
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
    transform-style: preserve-3d;
}

.work-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: var(--transition-base);
}

.work-card:hover {
    transform: translateY(-12px) translateZ(20px);
    border-color: var(--accent);
    box-shadow: var(--shadow-hover);
}

.work-card:hover::before {
    opacity: 1;
}

.card-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 20px;
    opacity: 0.7;
}

.card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 179, 0, 0.1);
    border-radius: 16px;
    margin-bottom: 24px;
}

.card-icon svg {
    width: 28px;
    height: 28px;
    color: var(--accent);
}

.card-metric {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-title {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.card-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.card-description strong {
    color: var(--accent);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.card-tags span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 6px 12px;
    background: var(--primary-light);
    border-radius: 4px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--section-padding) 0;
    background: var(--primary);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 179, 0, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.contact-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.contact-headline {
    font-family: var(--font-mono);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.contact-microcopy {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

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

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 12px;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.social-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-4px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 40px 0;
    background: var(--primary-light);
    border-top: 1px solid var(--primary-lighter);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.code-accent {
    color: var(--accent);
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Experience Section
   =================================== */
.experience {
    padding: var(--section-padding) 0;
    background: var(--primary);
}

.experience-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.exp-card {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 40px;
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition-base);
    position: relative;
}

.exp-card:hover {
    border-color: var(--accent);
    transform: translateX(8px);
    box-shadow: var(--shadow-hover);
}

.exp-period {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    padding-top: 4px;
    white-space: nowrap;
}

.exp-content {
    min-width: 0;
}

.exp-title {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.exp-org {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.exp-details {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.exp-details li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
}

.exp-details li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.exp-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.exp-tags span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 6px 12px;
    background: rgba(255, 179, 0, 0.1);
    border: 1px solid rgba(255, 179, 0, 0.2);
    border-radius: 4px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===================================
   Education Section
   =================================== */
.education {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
}

.education-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.edu-card {
    display: flex;
    gap: 32px;
    background: var(--primary);
    border: 1px solid var(--primary-lighter);
    border-radius: 16px;
    padding: 36px;
    transition: var(--transition-base);
}

.edu-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-hover);
}

.edu-icon {
    width: 60px;
    height: 60px;
    min-width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 179, 0, 0.1);
    border-radius: 14px;
}

.edu-icon svg {
    width: 30px;
    height: 30px;
    color: var(--accent);
}

.edu-info {
    flex: 1;
    min-width: 0;
}

.edu-header-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 4px;
}

.edu-degree {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.edu-period {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    padding: 4px 10px;
    background: rgba(255, 179, 0, 0.1);
    border-radius: 4px;
    border: 1px solid rgba(255, 179, 0, 0.2);
}

.edu-school {
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 12px;
}

.edu-status {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}

.edu-details-block {
    margin: 12px 0 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.edu-details-block p {
    margin: 0;
}

.edu-details-block strong {
    color: var(--text-primary);
}

/* ===================================
   Contact Details
   =================================== */
.contact-details {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 12px 20px;
    background: var(--primary-light);
    border: 1px solid var(--primary-lighter);
    border-radius: 8px;
    transition: var(--transition-base);
}

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

.location-item {
    cursor: default;
}

.location-item:hover {
    border-color: var(--primary-lighter);
    color: var(--text-secondary);
    transform: none;
}

.footer-resume-link {
    color: var(--accent);
    text-decoration: underline;
    margin-left: 6px;
}

.footer-resume-link:hover {
    color: var(--accent-hover);
}

.contact-item svg {
    color: var(--accent);
    min-width: 18px;
}

/* ===================================
   Project Placeholder
   =================================== */
.project-placeholder {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.project-placeholder svg {
    opacity: 0.5;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .hero-visual {
        grid-template-columns: 1fr 1fr;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .skills-grid,
    .projects-grid,
    .books-catalog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .exp-card {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .books-showcase {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
}

@media (max-width: 860px) {
    :root {
        --section-padding: 80px;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-container {
        padding: 0 24px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-container,
    .section-container,
    .footer-container {
        padding: 0 24px;
    }
    
    .hero-subheadline {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .separator {
        display: none;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-visual {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .terminal {
        order: -1;
    }
    
    .montage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-grid,
    .projects-grid,
    .books-catalog-grid {
        grid-template-columns: 1fr;
    }
    
    .exp-card {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 24px;
    }
    
    .edu-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
    }
    
    .contact-details {
        flex-direction: column;
        align-items: center;
    }
    
    .books-showcase {
        text-align: left;
    }
    
    .book-stack {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .book {
        width: 60px;
        height: 90px;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-headline {
        font-size: 1.75rem;
    }
    
    .terminal-body {
        padding: 16px;
    }
    
    .code {
        font-size: 0.65rem;
    }
    
    .skill-category,
    .work-card {
        padding: 24px;
    }
    
    .card-metric {
        font-size: 2rem;
    }
}