/* ===================================================================
   Tech Noir Developer Portfolio Stylesheet
   Author: Ryan Agdiwinata
   Design System: Dark Dev / Tech Noir (High-contrast, Cybernetic Accents)
   =================================================================== */

:root {
    --bg-main: #06080d;
    --bg-surface: #0b0f19;
    --bg-card: #101623;
    --bg-card-hover: #151d2e;
    --bg-card-header: #0d121c;

    --border-dim: #1a2333;
    --border-bright: #26354d;
    --border-cyan: rgba(0, 240, 255, 0.4);
    --border-green: rgba(0, 255, 157, 0.4);

    --cyan-glow: #00f0ff;
    --green-glow: #00ff9d;
    --amber-glow: #ffb86c;
    --purple-glow: #a78bfa;

    --text-pure: #ffffff;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-main);
    color: var(--text-primary);
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-bright);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--cyan-glow);
}

/* Ambient Background & Grid Effect */
.bg-grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    pointer-events: none;
    z-index: 0;
}

.ambient-glow {
    position: fixed;
    width: 450px;
    height: 450px;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.12;
    pointer-events: none;
    z-index: 0;
}

.glow-1 {
    top: -100px;
    right: 5%;
    background: var(--cyan-glow);
}

.glow-2 {
    bottom: 20%;
    left: -100px;
    background: var(--green-glow);
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

/* Typography Helpers */
.text-gradient-cyan {
    background: linear-gradient(135deg, #00f0ff 0%, #7000ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-green {
    background: linear-gradient(135deg, #00ff9d 0%, #00b4d8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cursor-blink {
    animation: blink 1s step-end infinite;
    color: var(--cyan-glow);
}

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

/* Header & Navbar */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(6, 8, 13, 0.85);
    border-bottom: 1px solid var(--border-dim);
    transition: var(--transition-fast);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.brand-logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-pure);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
    letter-spacing: -0.5px;
}

.prompt-symbol {
    color: var(--green-glow);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.8rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--cyan-glow);
}

.nav-btn {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--bg-main);
    background: var(--cyan-glow);
    text-decoration: none;
    padding: 0.45rem 1.1rem;
    border-radius: 6px;
    font-weight: 700;
    transition: var(--transition-fast);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.nav-btn:hover {
    background: #4df5ff;
    box-shadow: 0 0 22px rgba(0, 240, 255, 0.55);
    transform: translateY(-1px);
}

/* Hero Section */
.hero-section {
    padding: 6.5rem 0 4.5rem;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 255, 157, 0.08);
    border: 1px solid rgba(0, 255, 157, 0.25);
    padding: 6px 14px;
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--green-glow);
    margin-bottom: 2rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green-glow);
    box-shadow: 0 0 10px var(--green-glow);
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--text-pure);
    max-width: 900px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 740px;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 3.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.85rem 1.6rem;
    border-radius: 8px;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--text-pure);
    color: var(--bg-main);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
    background: #e2e8f0;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 255, 255, 0.25);
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--border-bright);
}

.btn-secondary:hover {
    border-color: var(--cyan-glow);
    color: var(--cyan-glow);
    background: var(--bg-card);
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

/* Hero Stats Grid */
.hero-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-dim);
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-dim);
    padding: 1.2rem 1.4rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--border-bright);
    transform: translateY(-2px);
}

.stat-num {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--cyan-glow);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* Section Shared Headers */
.section-header {
    text-align: left;
    margin-bottom: 2.8rem;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--green-glow);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--text-pure);
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 650px;
}

/* Terminal Console Section */
.terminal-section {
    padding: 4.5rem 0;
}

.terminal-window {
    background: #080b12;
    border: 1px solid var(--border-bright);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.75), 0 0 20px rgba(0, 240, 255, 0.05);
}

.terminal-titlebar {
    background: #0d121c;
    border-bottom: 1px solid var(--border-dim);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.control-btn.close { background: #ff5f56; }
.control-btn.minimize { background: #ffbd2e; }
.control-btn.maximize { background: #27c93f; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.terminal-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    background: rgba(0, 255, 157, 0.15);
    color: var(--green-glow);
    border: 1px solid rgba(0, 255, 157, 0.3);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
}

.terminal-body {
    padding: 1.4rem;
    min-height: 220px;
    max-height: 380px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.term-line {
    line-height: 1.5;
}

.banner-line {
    color: var(--cyan-glow);
}

.highlight-cmd {
    background: rgba(0, 240, 255, 0.12);
    border: 1px solid rgba(0, 240, 255, 0.3);
    padding: 1px 6px;
    border-radius: 4px;
    color: var(--cyan-glow);
}

.terminal-quick-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.pill-cmd {
    background: var(--bg-surface);
    border: 1px solid var(--border-dim);
    color: var(--green-glow);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.pill-cmd:hover {
    border-color: var(--green-glow);
    background: rgba(0, 255, 157, 0.08);
}

.term-cmd-history {
    color: var(--text-secondary);
}

.term-cmd-history .prompt {
    color: var(--green-glow);
    margin-right: 8px;
}

.term-output-block {
    background: rgba(255, 255, 255, 0.02);
    border-left: 2px solid var(--cyan-glow);
    padding: 8px 12px;
    margin: 4px 0 10px;
    color: var(--text-primary);
    white-space: pre-wrap;
    font-size: 0.84rem;
}

.terminal-input-row {
    background: #0a0e17;
    border-top: 1px solid var(--border-dim);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.term-prompt {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--green-glow);
    font-weight: 600;
    white-space: nowrap;
}

.term-input {
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-pure);
    width: 100%;
}

.term-input::placeholder {
    color: var(--text-tertiary);
}

/* Projects Showcase Section */
.projects-section {
    padding: 5rem 0;
}

.project-filters {
    display: flex;
    gap: 10px;
    margin-bottom: 2.2rem;
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 600;
    background: var(--bg-surface);
    color: var(--text-secondary);
    border: 1px solid var(--border-dim);
    padding: 7px 16px;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-pure);
    border-color: var(--border-bright);
}

.filter-btn.active {
    background: rgba(0, 240, 255, 0.1);
    color: var(--cyan-glow);
    border-color: var(--cyan-glow);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 1.8rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dim);
    border-radius: 12px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
}

.project-card:hover {
    border-color: var(--border-bright);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 240, 255, 0.08);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
}

.card-type-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--cyan-glow);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.badge-status {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    background: rgba(0, 255, 157, 0.1);
    color: var(--green-glow);
    border: 1px solid rgba(0, 255, 157, 0.3);
    padding: 3px 8px;
    border-radius: 4px;
}

.project-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-pure);
    letter-spacing: -0.5px;
    margin-bottom: 0.85rem;
    line-height: 1.3;
}

.project-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1.8rem;
}

.tech-stack-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: auto;
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: #0d121c;
    border: 1px solid var(--border-dim);
    color: var(--text-primary);
    padding: 4px 10px;
    border-radius: 6px;
}

/* Skills Arsenal Section */
.skills-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, transparent 0%, rgba(11, 15, 25, 0.5) 100%);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dim);
    border-radius: 12px;
    padding: 1.8rem;
    transition: var(--transition-fast);
}

.skill-category-card:hover {
    border-color: var(--border-bright);
    transform: translateY(-3px);
}

.category-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyan-glow);
    margin-bottom: 1.2rem;
}

.category-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-pure);
    margin-bottom: 1rem;
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-list li {
    font-size: 0.88rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.skill-list li::before {
    content: '▹';
    color: var(--green-glow);
    font-size: 0.95rem;
}

/* Contact Section */
.contact-section {
    padding: 6rem 0 7rem;
}

.contact-card {
    background: radial-gradient(ellipse at top, #141c2d 0%, #0d121d 100%);
    border: 1px solid var(--border-bright);
    border-radius: 16px;
    padding: 3.5rem 2.5rem;
    text-align: center;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0, 240, 255, 0.06);
    max-width: 840px;
    margin: 0 auto;
}

.contact-title {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--text-pure);
    margin: 0.8rem 0 1rem;
}

.contact-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
}

.contact-actions {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    flex-wrap: wrap;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-dim);
    padding: 2rem 0;
    background: var(--bg-main);
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

/* HUD Toast Notification */
.toast-hud {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #0f172a;
    border: 1px solid var(--cyan-glow);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), 0 0 15px rgba(0, 240, 255, 0.35);
    color: var(--text-pure);
    padding: 12px 20px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateY(120px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    z-index: 1000;
}

.toast-hud.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-icon {
    color: var(--green-glow);
    font-weight: bold;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.3rem;
    }
    .hero-section {
        padding: 4.5rem 0 3rem;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .nav-links {
        display: none; /* Mobile navigation simplified */
    }
    .contact-card {
        padding: 2.5rem 1.5rem;
    }
    .contact-title {
        font-size: 1.8rem;
    }
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.85rem;
    }
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .btn {
        justify-content: center;
    }
}