/* Custom Stylesheet for justintrinh.com */

/* Design Tokens & Variables */
:root {
    --bg-primary: #0B0F19;
    --bg-section-alt: #0E1322;
    --card-bg: rgba(22, 27, 34, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --accent-cyan: #00F2FE;
    --accent-purple: #8A2BE2;
    --accent-indigo: #4FACFE;
    --text-primary: #F0F6FC;
    --text-secondary: #8B949E;
    --text-secondary-muted: #57606A;
    --navbar-bg: rgba(11, 15, 25, 0.7);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base resets & styles */
html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
    position: relative;
}

/* Background animated stars */
.bg-stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-image: 
        radial-gradient(1.5px 1.5px at 20px 30px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.5), rgba(0,0,0,0)),
        radial-gradient(1.5px 1.5px at 90px 10px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 290px 520px, rgba(255,255,255,0.7), rgba(0,0,0,0)),
        radial-gradient(1.5px 1.5px at 450px 250px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 700px 80px, rgba(255,255,255,0.3), rgba(0,0,0,0)),
        radial-gradient(1.5px 1.5px at 850px 320px, #fff, rgba(0,0,0,0)),
        radial-gradient(2.5px 2.5px at 1150px 620px, rgba(255,255,255,0.8), rgba(0,0,0,0)),
        radial-gradient(1.5px 1.5px at 1350px 190px, #fff, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 1400px 1400px;
    opacity: 0.25;
    animation: rotateStars 300s linear infinite;
}

@keyframes rotateStars {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Typography & Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
}

.highlight-text-gradient {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 50%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Menu */
.navbar {
    background-color: var(--navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding-top: 12px !important;
    padding-bottom: 12px !important;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: -0.5px;
    font-size: 1.4rem;
}

.logo-symbol {
    color: var(--accent-cyan);
    font-family: var(--font-mono);
}

.accent-dot {
    color: var(--accent-cyan);
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 6px 12px !important;
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary) !important;
    background-color: rgba(255, 255, 255, 0.05);
}

.btn-cta {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
    color: #040810 !important;
    font-weight: 600 !important;
    border-radius: 8px;
    padding: 8px 20px !important;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
    filter: brightness(1.1);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding-top: 120px;
    overflow: hidden;
}

.badge-accent {
    background-color: rgba(0, 242, 254, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 242, 254, 0.2);
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7);
    animation: pulse 1.6s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(0, 242, 254, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 242, 254, 0);
    }
}

.hero-title {
    font-size: calc(1.8rem + 2.5vw);
    line-height: 1.1;
    letter-spacing: -1.5px;
}

.hero-subtitle {
    font-size: calc(1.2rem + 1vw);
    font-weight: 500;
    color: var(--text-secondary);
}

.typed-text {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 700;
}

.typed-cursor {
    color: var(--accent-cyan);
    animation: blink 0.8s infinite;
}

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

.hero-description {
    max-width: 600px;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
    border: none;
    color: #040810;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
    filter: brightness(1.1);
}

.btn-outline-light {
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(8px);
    font-weight: 600;
    transition: var(--transition-smooth);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Avatar Glow Container & Terminal Card */
.avatar-glow-container {
    position: relative;
    width: 100%;
    max-width: 440px;
    padding: 20px;
}

.avatar-glow-ring {
    position: absolute;
    top: 5%;
    left: 5%;
    width: 90%;
    height: 90%;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
    filter: blur(35px);
    opacity: 0.2;
    z-index: -1;
    animation: rotateGlow 20s linear infinite;
}

.avatar-glow-ring.secondary {
    animation: rotateGlow 15s linear infinite reverse;
    opacity: 0.15;
}

@keyframes rotateGlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Terminal Card styling (Glassmorphism & Code look) */
.terminal-card {
    background: rgba(13, 17, 23, 0.7);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    overflow: hidden;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.terminal-header {
    background: rgba(22, 27, 34, 0.6);
    border-bottom: 1px solid var(--card-border);
}

.dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}

.dot.red { background-color: #FF5F56; }
.dot.yellow { background-color: #FFBD2E; }
.dot.green { background-color: #27C93F; }

.terminal-title {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
}

.terminal-body {
    line-height: 1.5;
}

.terminal-output .key {
    color: var(--accent-cyan);
}

.terminal-output .val {
    color: #FFD700;
}

/* Sections Base Styling */
.section-padding {
    padding: 100px 0;
}

.bg-section-alt {
    background-color: var(--bg-section-alt);
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: inline-block;
}

.section-subtitle-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
    margin: 12px auto 0 auto;
    border-radius: 20px;
}

/* About Section Cards */
.about-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.about-card:hover {
    border-color: rgba(0, 242, 254, 0.2);
    box-shadow: 0 10px 30px -10px rgba(0, 242, 254, 0.1);
}

.card-inner-title {
    font-size: 1.25rem;
    font-weight: 700;
}

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

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

.tech-tag {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 8px 14px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
}

.tech-tag:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

.text-orange { color: #E34F26; }
.text-indigo { color: #7952B3; }
.text-yellow { color: #F7DF1E; }
.text-success { color: #42B883; }
.text-info { color: #3178C6; }
.text-danger { color: #F05032; }

/* Setup & Workspace Cards */
.setup-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.setup-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 15px 30px -10px rgba(0, 242, 254, 0.15);
}

.setup-icon {
    font-size: 2.2rem;
    color: var(--accent-cyan);
    display: inline-block;
    padding: 10px;
    background: rgba(0, 242, 254, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(0, 242, 254, 0.1);
}

.setup-title {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.setup-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.setup-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.setup-list li {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Portfolio Projects Cards */
.project-card {
    position: relative;
    border-radius: 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    overflow: hidden;
    height: 100%;
    z-index: 1;
    transition: var(--transition-smooth);
}

.project-card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(400px circle at var(--x, 0px) var(--y, 0px), rgba(0, 242, 254, 0.08), transparent 80%);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

.project-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.5);
}

.project-type {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.project-link-icon {
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: var(--transition-smooth);
}

.project-link-icon:hover {
    color: var(--text-primary);
    transform: scale(1.1);
}

.project-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.project-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-tags span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    padding: 4px 10px;
    border-radius: 6px;
}

/* Contact Area */
.contact-box {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.contact-icon-bg {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--text-secondary-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
}

a.contact-value:hover {
    color: var(--accent-cyan);
}

.form-control {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 12px;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
    color: var(--text-primary);
}

.form-control::placeholder {
    color: var(--text-secondary-muted);
}

/* Footer styling */
.footer-section {
    border-top: 1px solid var(--card-border);
    background-color: var(--bg-primary);
}

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

/* Back to top button */
.btn-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
    border: none;
    color: #040810;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: var(--transition-smooth);
    box-shadow: 0 5px 20px rgba(0, 242, 254, 0.3);
}

.btn-back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.btn-back-to-top:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 242, 254, 0.5);
    filter: brightness(1.1);
}

/* Fade in Scroll Animations classes */
.fade-in-element {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}