/* ===== Custom Properties ===== */
:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0b0;
    --accent-warm: #c4793a;
    --accent-cool: #3ecf8e;
    --accent-highlight: #d4a259;
    --border: #2a2a4a;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
    --nav-height: 64px;
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ===== Skip Link ===== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 1000;
    padding: 8px 16px;
    background: var(--accent-warm);
    color: var(--bg-primary);
    font-weight: 600;
    border-radius: var(--radius);
}

.skip-link:focus {
    top: 8px;
    color: var(--bg-primary);
}

/* ===== Focus Indicators ===== */
:focus-visible {
    outline: 2px solid var(--accent-cool);
    outline-offset: 2px;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Navigation ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: transparent;
    transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 var(--border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: var(--nav-height);
}

.nav-logo {
    display: flex;
    gap: 6px;
    font-size: 1rem;
    letter-spacing: 0.12em;
    color: var(--text-primary);
    text-transform: uppercase;
}

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

.nav-logo-bold {
    font-weight: 700;
}

.nav-logo-light {
    font-weight: 300;
    color: var(--text-secondary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 4px 0;
    position: relative;
}

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

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

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

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: transform var(--transition), opacity var(--transition);
    transform-origin: center;
}

.hamburger.active .hamburger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active .hamburger-bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: calc(var(--nav-height) + 40px) 20px 60px;
    background: linear-gradient(160deg, var(--bg-primary) 0%, var(--bg-secondary) 40%, #12122a 100%);
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 59px,
            rgba(42, 42, 74, 0.25) 59px,
            rgba(42, 42, 74, 0.25) 60px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 59px,
            rgba(42, 42, 74, 0.25) 59px,
            rgba(42, 42, 74, 0.25) 60px
        );
    animation: gridShift 30s linear infinite;
    opacity: 0.5;
}

@keyframes gridShift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
    text-align: center;
}

.hero-heading {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-highlight) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 36px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-warm);
    color: #fff;
    border-color: var(--accent-warm);
}

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

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

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

/* ===== Sections ===== */
.section {
    padding: 96px 0;
}

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

.section-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 12px;
    text-align: center;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    gap: 48px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 28px 16px;
    background: rgba(22, 33, 62, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.stat-number {
    font-size: 2.25rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent-warm);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.stat-detail {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* ===== Defender Cards ===== */
.defender-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.defender-card {
    display: flex;
    flex-direction: column;
    background: rgba(22, 33, 62, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition), border-color var(--transition);
}

.defender-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-warm);
}

.defender-card-img {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 180px;
    background: linear-gradient(135deg, rgba(196, 121, 58, 0.1) 0%, rgba(22, 33, 62, 0.8) 100%);
    color: var(--accent-warm);
}

.defender-card-body {
    padding: 24px;
}

.defender-card-body h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.defender-card-body p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 100px;
    letter-spacing: 0.04em;
}

.badge-available {
    background: rgba(62, 207, 142, 0.15);
    color: var(--accent-cool);
    border: 1px solid rgba(62, 207, 142, 0.3);
}

.badge-dev {
    background: rgba(212, 162, 89, 0.15);
    color: var(--accent-highlight);
    border: 1px solid rgba(212, 162, 89, 0.3);
}

.defender-note {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    text-align: center;
    font-style: italic;
}

/* ===== Software Cards ===== */
.software-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.software-card {
    display: flex;
    flex-direction: column;
    padding: 32px;
    background: rgba(22, 33, 62, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.software-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-cool);
    box-shadow: 0 0 24px rgba(62, 207, 142, 0.08);
    color: var(--text-primary);
}

.software-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(62, 207, 142, 0.1);
    border-radius: var(--radius);
    color: var(--accent-cool);
    margin-bottom: 20px;
}

.software-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    font-family: var(--font-mono);
}

.software-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 3px 10px;
    background: rgba(42, 42, 74, 0.6);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-secondary);
}

.software-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-cool);
}

/* ===== Writing ===== */
.writing-content {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

.writing-coming {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.topic-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.pill {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 20px;
    background: rgba(22, 33, 62, 0.6);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-primary);
    transition: border-color var(--transition), color var(--transition);
}

.pill:hover {
    border-color: var(--accent-highlight);
    color: var(--accent-highlight);
}

.writing-quote {
    border-left: 3px solid var(--accent-warm);
    padding: 16px 24px;
    text-align: left;
    background: rgba(196, 121, 58, 0.06);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.writing-quote p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--accent-highlight);
    line-height: 1.6;
}

/* ===== Honeypot ===== */
.hp-field {
    position: absolute;
    left: -9999px;
    top: -9999px;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    gap: 48px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-primary);
    background: rgba(22, 33, 62, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color var(--transition);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-cool);
    outline: none;
    box-shadow: 0 0 0 3px rgba(62, 207, 142, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(160, 160, 176, 0.4);
}

.btn-submit {
    align-self: flex-start;
}

#form-status {
    font-size: 0.9375rem;
    min-height: 24px;
}

#form-status.success {
    color: var(--accent-cool);
}

#form-status.error {
    color: #e05252;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    justify-content: center;
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.contact-detail svg {
    flex-shrink: 0;
    color: var(--accent-warm);
}

.contact-detail a {
    color: var(--text-secondary);
}

.contact-detail a:hover {
    color: var(--accent-cool);
}

/* ===== Footer ===== */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

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

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

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition);
}

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

/* ===== Fade-In Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive: 768px+ ===== */
@media (min-width: 768px) {
    .container {
        padding: 0 32px;
    }

    .hamburger {
        display: none;
    }

    .about-grid {
        grid-template-columns: 1.4fr 1fr;
        align-items: start;
    }

    .defender-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .software-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1.5fr 1fr;
        align-items: start;
    }
}

/* ===== Responsive: <768px ===== */
@media (max-width: 767px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(15, 15, 26, 0.98);
        backdrop-filter: blur(16px);
        padding: 8px 0;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        z-index: 99;
    }

    .nav-menu.open {
        transform: translateY(0);
    }

    .nav-link {
        display: block;
        padding: 14px 24px;
    }

    .nav-link::after {
        display: none;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .section {
        padding: 64px 0;
    }
}

/* ===== Responsive: 1024px+ ===== */
@media (min-width: 1024px) {
    .software-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===== Responsive: 1200px+ ===== */
@media (min-width: 1200px) {
    .container {
        padding: 0 40px;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .fade-in {
        opacity: 1;
        transform: none;
    }

    .hero-grid {
        animation: none;
    }
}

/* ===== Print ===== */
@media print {
    .site-header,
    .hamburger,
    .hero-grid,
    .hero-cta,
    .contact-form,
    .footer-links {
        display: none !important;
    }

    body {
        background: #fff;
        color: #111;
    }

    .section,
    .section-alt {
        background: #fff;
        padding: 24px 0;
    }

    .section-title,
    .hero-heading {
        color: #111;
        -webkit-text-fill-color: #111;
        background: none;
    }

    .stat-card,
    .defender-card,
    .software-card {
        background: #f5f5f5;
        border-color: #ccc;
        backdrop-filter: none;
    }

    a {
        color: #111;
        text-decoration: underline;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.75rem;
    }
}