*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --navy:   #0d1b2a;
    --navy2:  #132233;
    --cyan:   #00c2e0;
    --cyan2:  #00e5ff;
    --white:  #ffffff;
    --gray:   #f4f6f8;
    --muted:  #8899aa;
    --text:   #1a2a3a;
    --radius: 12px;
    --font:   'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--white);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* NAV */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(13, 27, 42, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 194, 224, 0.12);
}

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

.nav__logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--white);
    text-decoration: none;
}

.nav__logo span { color: var(--cyan); }

.nav__links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav__links a {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color 0.2s;
}

.nav__links a:hover { color: var(--cyan); }

/* HERO */
.hero {
    position: relative;
    background: var(--navy);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 64px;
}

.hero__glow {
    position: absolute;
    top: -200px; right: -200px;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(0,194,224,0.12) 0%, transparent 70%);
    pointer-events: none;
}

.hero__inner {
    position: relative;
    z-index: 1;
    padding: 5rem 2rem;
}

.hero__badge {
    display: inline-block;
    background: rgba(0,194,224,0.1);
    border: 1px solid rgba(0,194,224,0.3);
    color: var(--cyan);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 2rem;
}

.hero__title {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 1.5rem;
    max-width: 700px;
}

.hero__sub {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.65);
    max-width: 560px;
    margin-bottom: 2.5rem;
    line-height: 1.75;
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn--primary {
    background: var(--cyan);
    color: var(--navy);
}

.btn--primary:hover {
    background: var(--cyan2);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(0,194,224,0.3);
}

.btn--outline {
    border-color: var(--cyan);
    color: var(--cyan);
    background: transparent;
}

.btn--outline:hover {
    background: rgba(0,194,224,0.1);
}

.btn--lg { padding: 1rem 2.5rem; font-size: 1.05rem; }

/* SECTIONS */
.section {
    padding: 6rem 0;
}

.section--dark {
    background: var(--navy);
    color: var(--white);
}

.section--accent {
    background: var(--navy2);
    color: var(--white);
    text-align: center;
}

.section__title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.section--dark .section__title,
.section--accent .section__title { color: var(--white); }

.section__sub {
    font-size: 1.05rem;
    color: var(--muted);
    margin-bottom: 3.5rem;
    max-width: 560px;
}

.section--dark .section__sub,
.section--accent .section__sub { color: rgba(255,255,255,0.55); }

/* GRID */
.grid { display: grid; gap: 1.5rem; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

/* CARDS */
.card {
    background: var(--gray);
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}

.card__icon {
    font-size: 1.5rem;
    color: var(--cyan);
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--navy);
}

.card p { font-size: 0.9rem; color: #556; line-height: 1.65; }

/* PROJECTS */
.project {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.2s;
}

.project:hover { transform: translateY(-3px); }

.project__placeholder {
    background: linear-gradient(135deg, #132233, #0d2a3a);
    color: var(--cyan);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project__body { padding: 1.75rem; }

.project__body h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.project__tag {
    font-size: 0.78rem;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.75rem;
}

.project__body p { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-bottom: 1.25rem; }

.project--coming {
    display: flex;
    align-items: center;
    border-style: dashed;
    border-color: rgba(255,255,255,0.15);
    background: transparent;
}

.project--coming .project__body h3 { color: rgba(255,255,255,0.4); }
.project--coming .project__body p { color: rgba(255,255,255,0.3); }

/* PILLARS */
.pillar { padding: 1rem 0; }

.pillar__num {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--cyan);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 0.75rem;
}

.pillar h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--navy);
}

.pillar p { font-size: 0.92rem; color: #556; line-height: 1.7; }

/* CONTACT */
.contact__inner {
    padding: 4rem 2rem;
}

.contact__inner .section__sub { margin: 0 auto 2.5rem; }

/* FOOTER */
.footer {
    background: #080f1a;
    padding: 2.5rem 0;
}

.footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
}

.footer p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.35);
}

/* RESPONSIVE */
@media (max-width: 640px) {
    .nav__links { display: none; }
    .hero__inner { padding: 3rem 1.5rem; }
    .section { padding: 4rem 0; }
    .grid--3, .grid--2 { grid-template-columns: 1fr; }
}