/* ============================================
   ZeroTruster — IT Security & Compliance
   Color Palette: Dark charcoal + Emerald/Teal
   ============================================ */

:root {
    /* Core colors — dark with emerald accent (no blue+black) */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1c2128;
    --bg-card: rgba(22, 27, 34, 0.6);
    --bg-card-hover: rgba(30, 37, 46, 0.8);

    --accent: #00d4aa;
    --accent-light: #33ffd2;
    --accent-dim: rgba(0, 212, 170, 0.15);
    --accent-glow: rgba(0, 212, 170, 0.3);

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-tertiary: #6e7681;

    --border: rgba(48, 54, 61, 0.6);
    --border-accent: rgba(0, 212, 170, 0.3);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --section-padding: clamp(80px, 12vw, 160px);
    --container-max: 1200px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

a {
    color: inherit;
    text-decoration: none;
}

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font: inherit;
    color: inherit;
}

::selection {
    background: var(--accent-dim);
    color: var(--accent-light);
}

/* ===== Cursor Glow ===== */
.cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.4s ease;
    will-change: transform;
}

body:hover .cursor-glow {
    opacity: 0.07;
}

/* ===== Particle Canvas ===== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

/* ===== Container ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(20px, 5vw, 48px);
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 clamp(20px, 5vw, 48px);
    transition: all 0.4s var(--ease-out);
}

.nav.scrolled {
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.nav-link--cta {
    color: var(--bg-primary);
    background: var(--accent);
    font-weight: 600;
}

.nav-link--cta:hover {
    background: var(--accent-light);
    color: var(--bg-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ===== Language Switcher ===== */
.lang-switcher {
    position: relative;
    z-index: 1002;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.lang-toggle:hover {
    border-color: var(--border-accent);
    background: var(--accent-dim);
}

.lang-chevron {
    transition: transform 0.3s ease;
}

.lang-switcher.open .lang-chevron {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 160px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-secondary);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.96);
    transition: all 0.25s var(--ease-out);
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    border: none;
    border-radius: 8px;
    background: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-sans);
}

.lang-option:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}

.lang-option.active {
    background: var(--accent-dim);
    color: var(--accent);
}

.lang-flag {
    display: inline-flex;
    align-items: center;
    line-height: 1;
}

.lang-flag img {
    display: block;
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 170, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 170, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 80%);
}

.radial-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 40% at 50% 30%, var(--accent-dim) 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border: 1px solid var(--border-accent);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: var(--accent-dim);
    margin-bottom: 32px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 50%, #7dffc8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto 40px;
    line-height: 1.7;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow), 0 2px 10px rgba(0, 212, 170, 0.2);
}

.btn-primary:hover svg {
    transform: translateX(3px);
}

.btn-primary svg {
    transition: transform 0.3s ease;
}

.btn-ghost {
    border: 1px solid var(--border);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}

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

/* ===== Hero Stats ===== */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.stat {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stat-icon {
    color: var(--accent);
    display: flex;
}

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

.stat-divider {
    width: 1px;
    height: 20px;
    background: var(--border);
}

/* ===== Scroll Indicator ===== */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scroll-anim 2s ease infinite;
}

@keyframes scroll-anim {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* ===== Sections ===== */
.section {
    position: relative;
    z-index: 1;
    padding: var(--section-padding) 0;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header .section-title {
    margin-top: 4px;
}

/* ===== About Section ===== */
.about {
    border-top: 1px solid var(--border);
}

.section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.section-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.section-text:last-of-type {
    margin-bottom: 32px;
}

.about-links {
    display: flex;
    gap: 16px;
}

.about-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.about-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
    transform: translateY(-2px);
}

/* ===== Expertise Cards ===== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card {
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--accent-dim) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    background: var(--bg-card-hover);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--border-accent);
}

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

.card-icon {
    position: relative;
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    color: var(--accent);
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.card-title {
    position: relative;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.card-text {
    position: relative;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.card-tags {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.card-tags span {
    padding: 4px 10px;
    font-size: 0.72rem;
    font-weight: 500;
    font-family: var(--font-mono);
    border-radius: 6px;
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid rgba(0, 212, 170, 0.1);
}

/* ===== Approach Section ===== */
.approach {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

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

.timeline-item {
    position: relative;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: rgba(13, 17, 23, 0.5);
    transition: all 0.4s var(--ease-out);
}

.timeline-item:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.timeline-number {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: 20px;
}

.timeline-item:hover .timeline-number {
    opacity: 0.5;
}

.timeline-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Connect Section ===== */
.connect-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.connect-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 12px;
}

.connect-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.connect-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    transition: all 0.4s var(--ease-out);
}

.connect-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    background: var(--bg-card-hover);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2), 0 0 0 1px var(--border-accent);
}

.connect-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 4px;
    transition: all 0.3s ease;
}

.connect-card:hover .connect-icon {
    background: var(--accent);
    color: var(--bg-primary);
}

.connect-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.connect-value {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

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

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.footer-logo .logo-icon {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.footer-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ===== Animations ===== */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

[data-animate="fade-right"] {
    transform: translateX(-30px);
}

[data-animate="fade-left"] {
    transform: translateX(30px);
}

[data-animate].visible {
    opacity: 1;
    transform: translate(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        flex-direction: column;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border);
        padding: 80px 32px 32px;
        gap: 4px;
        transform: translateX(100%);
        transition: transform 0.4s var(--ease-out);
        z-index: 999;
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 1rem;
        padding: 12px 16px;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .lang-switcher {
        margin-right: 8px;
    }

    .lang-dropdown {
        right: -40px;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .section-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .expertise-grid {
        grid-template-columns: 1fr;
    }

    .approach-timeline {
        grid-template-columns: 1fr;
    }

    .connect-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        flex-direction: column;
        gap: 12px;
    }

    .stat-divider {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .card {
        padding: 24px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}