/* ==========================================================================
   CSS Variables & Theme
   ========================================================================== */
:root {
    /* Colors — Warm Cream Palette (lightest base, dark tan foreground) */
    --bg-main: #FBF5E6;
    /* Near-white cream — lightest, page base */
    --bg-alt: #EFE0C8;
    /* Warm beige — alternate section background */
    --card-bg: #F5ECD8;
    /* Soft warm card surface */
    --card-hover: #EEDFC8;
    /* Slightly richer cream on hover */

    --text-primary: #3D2810;
    /* Rich espresso brown — max contrast headings & body */
    --text-secondary: #7A5540;
    /* Deep warm brown — supporting text, ~5:1 contrast */
    --text-accent: #8B6040;
    /* Strong tan — links, highlights, icons, ~4.7:1 */
    --text-accent-hover: #3D2810;
    /* Deepest on hover */

    --border-color: rgba(139, 96, 64, 0.22);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8B6040, #A8826A);
    --gradient-glow: rgba(139, 96, 64, 0.15);

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'Fira Code', 'Roboto Mono', monospace;

    /* Spacing & Layout */
    --section-padding: 100px 0;
    --max-width: 1100px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;

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

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
}

p {
    margin-bottom: 1rem;
}

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

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

ul {
    list-style: none;
}

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

/* Utility Classes */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-spacing {
    padding: var(--section-padding);
}

.bg-alt {
    background-color: var(--bg-alt);
}

.text-accent {
    color: var(--text-accent) !important;
}

.mt-4 {
    margin-top: 1.5rem;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    position: relative;
    width: max-content;
}

.section-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 1px;
    background-color: var(--border-color);
    margin-left: 1.5rem;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-main);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #FBF5E6;
    border: none;
    box-shadow: 0 4px 15px rgba(139, 96, 64, 0.3);
}

.btn-primary:hover {
    color: #FBF5E6;
    box-shadow: 0 6px 20px rgba(139, 96, 64, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-accent);
    border: 1px solid var(--text-accent);
}

.btn-outline:hover {
    background-color: rgba(139, 96, 64, 0.1);
    transform: translateY(-2px);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 50%;
    padding: 0;
}

.btn-icon:hover {
    border-color: var(--text-accent);
    color: var(--text-accent);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    z-index: 1000;
    background-color: rgba(251, 245, 230, 0.98);
    backdrop-filter: blur(12px);
    transition: all var(--transition-normal);
    border-bottom: 1px solid transparent;
}

#navbar.scrolled {
    height: 70px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 25px -12px rgba(61, 40, 16, 0.25);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links li a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--text-accent);
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--text-accent);
    transition: width var(--transition-normal);
}

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--bg-alt);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right var(--transition-normal);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}

.mobile-menu.active {
    right: 0;
}

.close-btn {
    position: absolute;
    top: 30px;
    right: 30px;
    font-size: 1.8rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.close-btn:hover {
    color: var(--text-accent);
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
    width: 100%;
}

.mobile-nav-links li a {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    transition: color var(--transition-fast);
}

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

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: min(100vh, 780px);
    display: flex;
    align-items: center;
    padding-top: 120px;
    padding-bottom: 60px;
}

.hero-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
    align-items: center;
}

.greeting {
    color: var(--text-accent);
    font-family: var(--font-mono);
    margin-bottom: 1rem;
}

.name {
    font-size: clamp(40px, 8vw, 70px);
    line-height: 1.1;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #3D2810, #8B6040);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: clamp(20px, 4vw, 32px);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.accent-text {
    color: var(--text-accent);
    opacity: 0.6;
    margin: 0 0.2rem;
}

.intro {
    max-width: 600px;
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

/* Hero Visual - Code Window */
.hero-visual {
    position: relative;
    z-index: 1;
}

.code-window {
    background-color: var(--bg-alt);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    position: relative;
    z-index: 2;
}

.window-header {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0.75rem 1rem;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

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

.dot.red {
    background-color: #ff5f56;
}

.dot.yellow {
    background-color: #ffbd2e;
}

.dot.green {
    background-color: #27c93f;
}

.window-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    overflow-x: auto;
}

.window-body pre {
    margin: 0;
}

.window-body .keyword {
    color: #8B6040;
}

.window-body .variable {
    color: #3D2810;
}

.window-body .operator {
    color: #5c3d20;
}

.window-body .property {
    color: #7A5540;
}

.window-body .string {
    color: #6a7a40;
}

.window-body .function {
    color: #3D2810;
}

.glow-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 110%;
    height: 110%;
    background: radial-gradient(circle, var(--gradient-glow) 0%, transparent 60%);
    z-index: -1;
    filter: blur(40px);
    opacity: 0.5;
}

.hero {
    overflow: hidden;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.highlight-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--card-bg);
    padding: 1rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: var(--text-accent);
}

.stat-item i {
    font-size: 1.5rem;
    color: var(--text-accent);
}

.stat-item span {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.about-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.about-image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
    transition: all var(--transition-normal);
}

.about-image-wrapper:hover .about-image-placeholder {
    transform: translate(-10px, -10px);
}

.frame {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--text-accent);
    border-radius: var(--border-radius-md);
    z-index: 1;
    transition: all var(--transition-normal);
}

.about-image-wrapper:hover .frame {
    top: 10px;
    left: 10px;
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-category {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.skill-category:hover {
    transform: translateY(-10px);
    border-color: rgba(139, 96, 64, 0.5);
    box-shadow: 0 10px 30px rgba(139, 96, 64, 0.15);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.category-header i {
    font-size: 1.5rem;
    color: var(--text-accent);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background-color: rgba(139, 96, 64, 0.1);
    color: var(--text-accent);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    border: 1px solid rgba(139, 96, 64, 0.25);
    transition: all var(--transition-fast);
}

.skill-category:hover .skill-tag {
    background-color: rgba(139, 96, 64, 0.18);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */
.projects-grid {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: rgba(139, 96, 64, 0.45);
    box-shadow: 0 20px 40px rgba(139, 96, 64, 0.15);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-type {
    font-family: var(--font-mono);
    color: var(--text-accent);
    font-size: 0.85rem;
}

.project-links a {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-left: 1rem;
}

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

.project-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.project-title a {
    color: inherit;
}

.project-title a:hover {
    color: var(--text-accent);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.project-description ul {
    margin-top: 1rem;
    margin-left: 1.2rem;
    list-style-type: disc;
}

.project-description li {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.highlight-note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(139, 96, 64, 0.08);
    border-radius: var(--border-radius-sm);
    border-left: 3px solid var(--text-accent);
    font-size: 0.9rem;
    color: var(--text-primary);
}

.project-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Achievements Section
   ========================================================================== */
.achievement-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform var(--transition-normal);
}

.achievement-card:hover {
    transform: translateY(-10px);
    border-color: rgba(139, 96, 64, 0.45);
}

.achievement-icon {
    width: 70px;
    height: 70px;
    background: rgba(139, 96, 64, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
    color: var(--text-accent);
}

.code-icon {
    color: #8B6040;
}

.trophy-icon {
    color: #7A5540;
}

.achievement-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.rating-text {
    margin-top: 1rem;
    font-family: var(--font-mono);
}

.rating-badge {
    background-color: var(--text-accent);
    color: #FBF5E6;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 700;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-title {
    font-size: clamp(30px, 5vw, 50px);
    margin-bottom: 1.5rem;
}

.contact-desc {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 3rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    transform: translateY(-3px);
    border-color: var(--text-accent);
    color: var(--text-accent);
    box-shadow: 0 5px 15px rgba(139, 96, 64, 0.2);
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-alt);
}

footer p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-tech {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    opacity: 0.7;
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 900px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .cta-buttons {
        justify-content: center;
    }

    .window-body {
        text-align: left;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-text {
        text-align: justify;
    }

    .highlight-stats {
        justify-content: center;
    }

    .about-image-wrapper {
        order: -1;
        margin-bottom: 1rem;
    }

    .section-title {
        margin: 0 auto 3rem;
    }

    .section-title::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .section-spacing {
        padding: 80px 0;
    }

    .project-card {
        padding: 1.5rem;
    }
}