/* CSS Design System - Personal Portfolio for Indra Haryadi */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* CSS variables for customizable design tokens */
:root {
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-code: 'JetBrains Mono', monospace;

    /* Theme - Dark Mode (Default) */
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-card-hover: rgba(31, 41, 55, 0.85);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.18);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    /* Accents - Tailwind-like tailered HSL colors */
    --accent-primary: hsl(190, 100%, 45%); /* Neon Cyan */
    --accent-secondary: hsl(35, 100%, 50%); /* Amber Orange */
    --accent-success: hsl(145, 80%, 40%); /* Emerald Green */
    --accent-indigo: hsl(250, 95%, 65%); /* Vibrant Indigo */
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
    
    --glass-blur: 16px;
    --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);
    
    --navbar-height: 80px;
    --container-max-width: 1200px;
    
    --scroll-progress: 0%;
}

/* Light Theme Variables overrides */
:root.light {
    --bg-primary: #fafafa;
    --bg-secondary: #f0f4f8;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 1);
    
    --border-color: rgba(10, 25, 47, 0.08);
    --border-color-hover: rgba(10, 25, 47, 0.15);
    
    --text-primary: #112a46;
    --text-secondary: #4b5e72;
    --text-muted: #728498;

    --accent-primary: hsl(215, 80%, 45%); /* Royal Blue */
    --accent-secondary: hsl(160, 75%, 38%); /* Emerald / Teal */
    --accent-success: hsl(140, 65%, 40%); /* Green */
    --accent-indigo: hsl(280, 70%, 50%); /* Violet */

    --shadow-sm: 0 4px 12px rgba(17, 42, 70, 0.04);
    --shadow-md: 0 8px 24px rgba(17, 42, 70, 0.06);
    --shadow-lg: 0 16px 48px rgba(17, 42, 70, 0.08);
}

/* Global Reset & Base Elements */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    max-width: 100vw;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
}

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

button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color-hover);
    border-radius: 5px;
    border: 2px solid var(--bg-secondary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Base Layout Classes */
.container {
    max-width: var(--container-max-width);
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

.section {
    padding: 100px 0;
    border-bottom: 1px solid var(--border-color);
}

.section:last-child {
    border-bottom: none;
}

/* Section Titles styling */
.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 16px;
    display: inline-block;
    position: relative;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin-bottom: 60px;
    font-weight: 400;
}

.section-header-center {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Glassmorphism Styles */
.glass-panel {
    background-color: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card {
    background-color: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-4px);
    background-color: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-md);
}

/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
    border: 1px solid transparent;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-indigo) 100%);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
    transform: translateY(-2px);
}

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

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

.btn-orange {
    background: linear-gradient(135deg, var(--accent-secondary) 0%, #ff6b4a 100%);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.25);
}

.btn-orange:hover {
    box-shadow: 0 6px 20px rgba(243, 156, 18, 0.4);
    transform: translateY(-2px);
}

/* Badges & Tags */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-code);
}

.badge-cyan {
    background-color: rgba(0, 242, 254, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 242, 254, 0.2);
}

.badge-orange {
    background-color: rgba(243, 156, 18, 0.1);
    color: var(--accent-secondary);
    border: 1px solid rgba(243, 156, 18, 0.2);
}

.badge-emerald {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--accent-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-indigo {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--accent-indigo);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* Grids & Layout systems */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Navbar Component styling */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    z-index: 1000;
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar.scrolled {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.navbar-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-indigo) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-secondary);
    display: inline-block;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.theme-toggle-btn:hover {
    background-color: var(--border-color-hover);
    transform: rotate(15deg);
}

.theme-toggle-btn svg {
    width: 20px;
    height: 20px;
    fill: var(--text-primary);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    margin: 6px auto;
    background-color: var(--text-primary);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Scroll Progress indicator */
.scroll-progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-indigo));
    width: var(--scroll-progress);
    z-index: 1001;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: calc(var(--navbar-height) + 60px);
    padding-bottom: 60px;
    position: relative;
    overflow: hidden;
}

/* Floating interactive mesh background */
.hero-mesh {
    position: absolute;
    top: 5%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 242, 254, 0.12) 0%, rgba(99, 102, 241, 0.05) 50%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
    animation: float-mesh 12s infinite alternate ease-in-out;
}

.hero-mesh-2 {
    position: absolute;
    bottom: -10%;
    left: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(243, 156, 18, 0.08) 0%, rgba(0, 242, 254, 0.02) 55%, transparent 75%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
    z-index: 1;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero-title span {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-indigo) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-typing-wrap {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 24px;
    height: 40px;
    display: flex;
    align-items: center;
}

.hero-typing {
    border-right: 3px solid var(--accent-primary);
    padding-right: 4px;
    white-space: nowrap;
    animation: blink-caret 0.75s step-end infinite;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-socials {
    display: flex;
    align-items: center;
    gap: 20px;
}

.social-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-card);
    transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.social-icon:hover {
    transform: translateY(-3px);
    background-color: var(--border-color);
    border-color: var(--border-color-hover);
}

.social-icon svg {
    width: 18px;
    height: 18px;
    fill: var(--text-secondary);
    transition: fill var(--transition-fast);
}

.social-icon:hover svg {
    fill: var(--text-primary);
}

.hero-image-wrap {
    position: relative;
    width: 100%;
    max-width: 340px;
    margin: 0 auto;
    padding-right: 20px;
    padding-bottom: 20px;
}

.hero-image-container {
    width: 100%;
    aspect-ratio: 4 / 5;
    height: auto;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color-hover);
    position: relative;
    z-index: 10;
}

.hero-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.hero-image-deco {
    position: absolute;
    width: calc(100% - 20px);
    height: calc(100% - 20px);
    top: 20px;
    left: 20px;
    border: 2px solid var(--accent-secondary);
    border-radius: 24px;
    z-index: 5;
    pointer-events: none;
    opacity: 0.6;
}

/* Stats counter component */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
    text-align: center;
}

.stat-item {
    border-radius: 16px;
    padding: 24px 16px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-primary);
    font-family: var(--font-heading);
    margin-bottom: 4px;
}

.stat-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
}

.about-bio p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.education-card {
    border-radius: 16px;
    padding: 24px;
    margin-top: 32px;
}

.edu-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.edu-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background-color: rgba(243, 156, 18, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.edu-icon-wrap svg {
    width: 24px;
    height: 24px;
    fill: var(--accent-secondary);
}

.edu-school {
    font-size: 1.15rem;
    font-weight: 700;
}

.edu-degree {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.domains-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.domain-tag {
    font-size: 0.85rem;
    padding: 6px 12px;
    border-radius: 8px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    font-weight: 500;
    color: var(--text-secondary);
}

/* Skills Quadrants */
.skills-quadrants {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.skills-quadrant-card {
    border-radius: 20px;
    padding: 32px;
    height: 100%;
}

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

.quadrant-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quadrant-icon svg {
    width: 24px;
    height: 24px;
}

.quadrant-icon-cyan {
    background-color: rgba(0, 242, 254, 0.1);
}
.quadrant-icon-cyan svg { fill: var(--accent-primary); }

.quadrant-icon-orange {
    background-color: rgba(243, 156, 18, 0.1);
}
.quadrant-icon-orange svg { fill: var(--accent-secondary); }

.quadrant-icon-emerald {
    background-color: rgba(16, 185, 129, 0.1);
}
.quadrant-icon-emerald svg { fill: var(--accent-success); }

.quadrant-icon-indigo {
    background-color: rgba(99, 102, 241, 0.1);
}
.quadrant-icon-indigo svg { fill: var(--accent-indigo); }

.quadrant-title {
    font-size: 1.35rem;
    font-weight: 700;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.skill-tag:hover {
    transform: scale(1.03);
    border-color: var(--border-color-hover);
    background-color: var(--bg-secondary);
}

.skill-tag-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.skill-tag-dot.cyan { background-color: var(--accent-primary); }
.skill-tag-dot.orange { background-color: var(--accent-secondary); }
.skill-tag-dot.emerald { background-color: var(--accent-success); }
.skill-tag-dot.indigo { background-color: var(--accent-indigo); }

/* Work Experience Timeline */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 40px auto 0;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 40px;
    width: 4px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--border-color) 100%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 50px;
}

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

.timeline-dot {
    position: absolute;
    left: 28px;
    top: 4px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 4px solid var(--accent-primary);
    z-index: 10;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.timeline-dot.orange {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 10px rgba(243, 156, 18, 0.4);
}

.timeline-dot::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-primary);
}

.timeline-item:hover .timeline-dot {
    box-shadow: 0 0 16px var(--accent-primary);
}
.timeline-item:hover .timeline-dot.orange {
    box-shadow: 0 0 16px var(--accent-secondary);
}

.timeline-content-card {
    border-radius: 16px;
    cursor: pointer;
    overflow: hidden;
}

.timeline-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 12px;
}

.timeline-title-wrap {
    display: flex;
    flex-direction: column;
}

.timeline-role {
    font-size: 1.35rem;
    font-weight: 700;
}

.timeline-company {
    font-size: 1rem;
    color: var(--accent-primary);
    font-weight: 600;
    margin-top: 2px;
}
.timeline-company.orange {
    color: var(--accent-secondary);
}

.timeline-date {
    font-family: var(--font-code);
    font-size: 0.9rem;
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    border-radius: 6px;
    font-weight: 500;
}

.timeline-summary {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Expandable Drawer inside timeline card */
.timeline-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1), margin-top var(--transition-normal);
}

.timeline-content-card.expanded .timeline-details {
    max-height: 1000px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.timeline-bullets {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.timeline-bullets li {
    position: relative;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.timeline-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: 700;
}

.timeline-bullets li.orange::before {
    color: var(--accent-secondary);
}

.timeline-toggle-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-top: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition-fast);
}

.timeline-content-card:hover .timeline-toggle-indicator {
    color: var(--text-secondary);
}

.timeline-toggle-indicator svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
    transition: transform var(--transition-normal);
}

.timeline-content-card.expanded .timeline-toggle-indicator svg {
    transform: rotate(180deg);
}

/* Projects Section with Categories */
.filters-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-right: 8px;
}

.filter-btn {
    background: none;
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-indigo) 100%);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.project-card {
    border-radius: 20px;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-image-wrap {
    height: 200px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.project-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image-wrap img {
    transform: scale(1.08);
}

.project-date-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background-color: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #ffffff;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-code);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.project-body {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

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

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-platforms, .project-techs {
    margin-bottom: 16px;
}

.project-tags-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.project-icons-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.platform-icon-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 500;
}

.tech-icon-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--accent-primary);
    background-color: rgba(0, 242, 254, 0.05);
    border: 1px solid rgba(0, 242, 254, 0.1);
    padding: 3px 8px;
    border-radius: 5px;
    font-weight: 600;
    font-family: var(--font-code);
}

.tech-icon-tag.orange {
    color: var(--accent-secondary);
    background-color: rgba(243, 156, 18, 0.05);
    border: 1px solid rgba(243, 156, 18, 0.1);
}

.project-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

/* Achievements & Awards */
.awards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.award-featured-card {
    grid-column: span 2;
    border-radius: 20px;
    padding: 32px;
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 36px;
    align-items: center;
}

.award-featured-image {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.award-content {
    display: flex;
    flex-direction: column;
}

.award-year {
    font-family: var(--font-code);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-secondary);
    margin-bottom: 8px;
}

.award-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.award-org {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.award-org::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-primary);
}

.award-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.award-small-card {
    border-radius: 16px;
    padding: 24px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.award-icon-box {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background-color: rgba(243, 156, 18, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.award-icon-box.blue {
    background-color: rgba(0, 242, 254, 0.1);
}

.award-icon-box svg {
    width: 24px;
    height: 24px;
    fill: var(--accent-secondary);
}

.award-icon-box.blue svg {
    fill: var(--accent-primary);
}

.award-small-details {
    display: flex;
    flex-direction: column;
}

/* Other Achievements list */
.other-achievements-box {
    grid-column: span 2;
    margin-top: 24px;
    border-radius: 16px;
    padding: 28px;
}

.other-achievements-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.other-achievements-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.other-ach-item {
    display: flex;
    gap: 12px;
}

.other-ach-bullet {
    color: var(--accent-primary);
    font-weight: 700;
    font-size: 1.2rem;
    line-height: 1;
}

.other-ach-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Speeches & Events Section */
.speeches-events-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
}

.events-col, .speeches-col {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.speeches-col {
    max-height: 800px;
    overflow-y: auto;
    padding-right: 12px;
}

.column-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.column-title-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-primary);
}

.column-title-dot.orange {
    background-color: var(--accent-secondary);
}

.speaker-image-card {
    border-radius: 16px;
    overflow: hidden;
    height: 180px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
}

.speaker-image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.speech-item, .event-item {
    padding: 20px;
    border-radius: 16px;
    border-left: 4px solid var(--accent-primary);
}

.event-item {
    border-left-color: var(--accent-secondary);
}

.speech-header, .event-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.85rem;
}

.speech-location, .event-role {
    font-family: var(--font-code);
    color: var(--text-secondary);
}

.speech-title, .event-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.speech-desc, .event-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Community Section styling */
.community-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.community-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.community-logo-placeholder {
    width: 100%;
    height: 80px;
    border-radius: 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-muted);
    font-family: var(--font-heading);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.1);
}

.community-logo-placeholder.kagama {
    color: var(--accent-secondary);
}
.community-logo-placeholder.invra {
    color: var(--accent-indigo);
}
.community-logo-placeholder.fb {
    color: #1877f2;
}
.community-logo-placeholder.aditif {
    color: var(--accent-primary);
}
.community-logo-placeholder.abi {
    color: var(--accent-primary);
}
.community-logo-placeholder.aspakrindo {
    color: var(--accent-secondary);
}
.community-logo-placeholder.icdx {
    color: var(--accent-indigo);
}
.community-logo-placeholder.ethereum {
    color: #8c8c8c;
}
.community-logo-placeholder.absi {
    color: var(--accent-success);
}
.community-logo-placeholder.kadin {
    color: var(--accent-primary);
}
.community-logo-placeholder.hipmi {
    color: var(--accent-secondary);
}

.community-card-body {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.community-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.community-role {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    font-family: var(--font-code);
}

.community-card-title.orange + .community-role {
    color: var(--accent-secondary);
}

.community-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 48px;
}

.contact-info-col {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-info-lead {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1.3;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-method-card {
    display: flex;
    gap: 16px;
    align-items: center;
}

.contact-method-icon {
    width: 46px;
    height: 46px;
    border-radius: 10px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-method-icon svg {
    width: 20px;
    height: 20px;
    fill: var(--accent-primary);
}

.contact-method-details {
    display: flex;
    flex-direction: column;
}

.contact-method-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

.contact-method-value {
    font-size: 0.95rem;
    font-weight: 600;
    word-break: break-all;
}

.contact-image-box {
    margin-top: 16px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.contact-image-box img {
    width: 100%;
    object-fit: cover;
}

/* Contact Form styling */
.contact-form-card {
    border-radius: 20px;
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input, .form-textarea {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 16px;
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.15);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

.error-message {
    color: #ef4444;
    font-size: 0.8rem;
    font-weight: 500;
    display: none;
    margin-top: 4px;
}

.form-group.has-error .form-input, .form-group.has-error .form-textarea {
    border-color: #ef4444;
}

.form-group.has-error .error-message {
    display: block;
}

/* Success Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(10, 14, 23, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.success-modal {
    width: 90%;
    max-width: 440px;
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .success-modal {
    transform: translateY(0);
}

.success-icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: rgba(16, 185, 129, 0.1);
    border: 2px solid var(--accent-success);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.2);
}

.success-icon-wrap svg {
    width: 32px;
    height: 32px;
    fill: var(--accent-success);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.modal-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 28px;
}

/* Footer styling */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 48px 0;
    text-align: center;
}

.footer-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.footer-nav-link {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Animation Keyframes */
@keyframes float-mesh {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(-30px, 30px) scale(1.05);
    }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--accent-primary); }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .skills-quadrants {
        grid-template-columns: 1fr;
    }
    .awards-grid {
        grid-template-columns: 1fr;
    }
    .award-featured-card {
        grid-column: span 1;
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .other-achievements-box {
        grid-column: span 1;
    }
    .other-achievements-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .speeches-events-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .community-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .section {
        padding: 70px 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--navbar-height));
        background-color: var(--bg-secondary);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 48px;
        gap: 28px;
        transition: left var(--transition-normal);
        border-top: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        z-index: 999;
    }
    
    .hero-section {
        justify-content: flex-start;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-typing-wrap {
        justify-content: center;
        height: auto;
        min-height: 40px;
    }
    
    .hero-typing {
        font-size: 1.2rem;
        white-space: pre-wrap;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-image-wrap {
        order: -1;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .hero-socials {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-dot {
        left: 8px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-header {
        flex-direction: column;
        gap: 8px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-typing {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-top: 40px;
    }
    
    .stat-item {
        padding: 16px 8px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-title {
        font-size: 0.8rem;
    }
    
    .other-achievements-list {
        grid-template-columns: 1fr;
    }
    
    .community-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-card {
        padding: 24px;
    }
    
    .success-modal {
        padding: 24px;
    }
}