styles.css

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

:root {
 --black: #0a0a0a;
 --white: #ffffff;
 --gray-100: #f7f7f7;
 --gray-200: #e8e8e8;
 --gray-400: #999999;
 --gray-600: #555555;
 --gray-800: #222222;
 --font: 'Inter', 'Helvetica Neue', Arial, sans-serif;
 --transition: 0.3s ease;
 --lift-transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;

 /* ── THEME TOKENS ──
 Single source of truth for light/dark. Every themed color in this
 file should reference one of these, not a raw hex. To retheme a
 component, change the token here (and its body.dark redefinition
 below) — never add a new per-selector body.dark override. */
 --bg: var(--white); /* page / primary section background */
 --bg-alt: var(--gray-100); /* alternating / tinted section background */
 --surface: var(--white); /* card resting on --bg */
 --surface-alt: var(--white); /* card resting on --bg-alt */
 --inset: var(--gray-100); /* recessed panel resting on --surface */
 --text: var(--black); /* primary text */
 --text-secondary: var(--gray-600); /* subtitles, body copy */
 --text-muted: var(--gray-400); /* eyebrow labels, tags, timestamps */
 --border: var(--gray-200); /* default card/divider border */
 --border-strong: var(--gray-200); /* borders on interactive controls */
 --invert-bg: var(--black); /* solid CTA elements that flip fill in dark mode */
 --invert-text: var(--white);
 --invert-hover: var(--gray-800);
 --nav-bg: rgba(255, 255, 255, 0.95);
 --shadow-card: rgba(0, 0, 0, 0.14); /* hover shadow on cards */
 --shadow-lg: rgba(0, 0, 0, 0.10); /* ambient shadow on the hero card */
}

html { scroll-behavior: smooth; }

body {
 font-family: var(--font);
 background: var(--bg);
 color: var(--text);
 line-height: 1.6;
 overflow-x: hidden;
}

/* ── NAV ── */
nav {
 position: fixed;
 top: 0; left: 0; right: 0;
 z-index: 100;
 display: flex;
 align-items: center;
 justify-content: space-between;
 padding: 1.2rem 5%;
 background: var(--nav-bg);
 backdrop-filter: blur(10px);
 border-bottom: 1px solid var(--border);
 transition: var(--transition);
}

nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

.nav-logo img { height: 44px; }

.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
 text-decoration: none;
 color: var(--text-secondary);
 font-size: 0.875rem;
 font-weight: 500;
 letter-spacing: 0.02em;
 transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active {
 color: var(--text);
 font-weight: 700;
 border-bottom: 2px solid var(--text);
 padding-bottom: 2px;
}

.nav-cta {
 background: var(--invert-bg);
 color: var(--invert-text) !important;
 padding: 0.5rem 1.25rem;
 border-radius: 4px;
}
.nav-cta:hover { background: var(--invert-hover); color: var(--invert-text) !important; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); transition: var(--transition); }

/* ── HERO ── */
#hero {
 min-height: 100vh;
 display: flex;
 align-items: center;
 padding: 8rem 5% 5rem;
 background: var(--bg);
 position: relative;
 overflow: hidden;
}

#particles {
 position: absolute;
 inset: 0;
 width: 100%;
 height: 100%;
 z-index: 0;
 pointer-events: none;
}

.hero-grid { position: relative; z-index: 1; }

.hero-grid {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 4rem;
 align-items: center;
 max-width: 1200px;
 margin: 0 auto;
 width: 100%;
}

.hero-badge {
 display: inline-block;
 font-size: 0.75rem;
 font-weight: 600;
 letter-spacing: 0.12em;
 text-transform: uppercase;
 color: var(--text-muted);
 margin-bottom: 1.5rem;
}

.hero-title {
 font-size: clamp(2.5rem, 5vw, 4rem);
 font-weight: 800;
 line-height: 1.1;
 letter-spacing: -0.03em;
 margin-bottom: 1.5rem;
}

.hero-title span { color: var(--text-muted); }

.hero-desc {
 font-size: 1.1rem;
 color: var(--text-secondary);
 max-width: 480px;
 margin-bottom: 2.5rem;
 line-height: 1.7;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary {
 display: inline-flex;
 align-items: center;
 gap: 0.5rem;
 background: var(--invert-bg);
 color: var(--invert-text);
 padding: 0.875rem 1.75rem;
 border-radius: 4px;
 font-weight: 600;
 font-size: 0.9rem;
 text-decoration: none;
 transition: var(--transition);
 letter-spacing: 0.01em;
}
.btn-primary:hover { background: var(--invert-hover); transform: translateY(-1px); }

.btn-secondary {
 display: inline-flex;
 align-items: center;
 gap: 0.5rem;
 background: transparent;
 color: var(--text);
 padding: 0.875rem 1.75rem;
 border-radius: 4px;
 border: 1.5px solid var(--border-strong);
 font-weight: 600;
 font-size: 0.9rem;
 text-decoration: none;
 transition: var(--transition);
}
.btn-secondary:hover { border-color: var(--text); transform: translateY(-1px); }

.hero-visual {
 display: flex;
 justify-content: center;
 align-items: center;
}

.hero-card {
 background: var(--surface);
 border: 1px solid var(--border);
 border-radius: 14px;
 padding: 1.5rem;
 width: 100%;
 max-width: 420px;
 position: relative;
 box-shadow: 0 22px 60px var(--shadow-lg);
}

.hero-card::before {
 content: "";
 position: absolute;
 inset: 0;
 border-radius: inherit;
 background: linear-gradient(135deg, rgba(0,0,0,0.04), rgba(0,0,0,0));
 pointer-events: none;
}

.hero-card-header {
 position: relative;
 display: flex;
 justify-content: space-between;
 gap: 1rem;
 align-items: center;
 padding-bottom: 0.9rem;
 margin-bottom: 0.9rem;
 border-bottom: 1px solid var(--border);
}

.hero-card-header span {
 color: var(--text-muted);
 font-size: 0.72rem;
 font-weight: 700;
 letter-spacing: 0.12em;
 text-transform: uppercase;
}

.hero-card-header strong {
 font-size: 0.82rem;
 font-weight: 700;
 background: var(--invert-bg);
 color: var(--invert-text);
 padding: 0.45rem 0.65rem;
 border-radius: 999px;
 white-space: nowrap;
}

.hero-stats {
 position: relative;
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 0.85rem;
}

.stat-item {
 text-align: left;
 background: var(--inset);
 border: 1px solid var(--border);
 border-radius: 12px;
 padding: 1.15rem;
 min-height: 132px;
 display: flex;
 flex-direction: column;
 justify-content: space-between;
}
.stat-num {
 display: flex;
 align-items: center;
 gap: 0.35rem;
 font-size: 2.9rem;
 font-weight: 800;
 letter-spacing: -0.03em;
 line-height: 1;
}

.stat-star {
 color: #f5a400;
 font-size: 1.25rem;
 line-height: 1;
 transform: translateY(-0.25rem);
}

.stat-label {
 font-size: 0.75rem;
 color: var(--text-muted);
 font-weight: 700;
 margin-top: 1rem;
 letter-spacing: 0.05em;
 text-transform: uppercase;
}

.hero-card-note {
 position: relative;
 margin-top: 0.9rem;
 padding: 0.9rem 1rem;
 background: var(--invert-bg);
 border-radius: 10px;
 color: var(--invert-text);
 font-weight: 500;
 letter-spacing: 0;
 font-size: 0.85rem;
 line-height: 1.6;
}

/* ── SECTION COMMON ── */
section { padding: 6rem 5%; }
.section-inner { max-width: 1200px; margin: 0 auto; }

.section-tag {
 display: inline-block;
 font-size: 0.7rem;
 font-weight: 700;
 letter-spacing: 0.15em;
 text-transform: uppercase;
 color: var(--text-muted);
 margin-bottom: 1rem;
}

.section-title {
 font-size: clamp(1.8rem, 3.5vw, 2.75rem);
 font-weight: 800;
 letter-spacing: -0.03em;
 line-height: 1.15;
 margin-bottom: 1rem;
}

.section-subtitle {
 font-size: 1rem;
 color: var(--text-secondary);
 max-width: 560px;
 line-height: 1.7;
}

/* ── PAGE HERO (standalone pages) ── */
#page-hero {
 padding: 10rem 5% 4rem;
 background: var(--bg);
 text-align: center;
}
#page-hero .section-inner { display: flex; flex-direction: column; align-items: center; }
#page-hero .section-subtitle { max-width: 640px; margin: 0 auto; }
.page-breadcrumb {
 font-size: 0.8rem;
 color: var(--text-muted);
 margin-bottom: 1rem;
}
.page-breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.page-breadcrumb a:hover { color: var(--text); }

/* ── CTA (standalone pages) ── */
#page-cta { background: var(--bg-alt); text-align: center; }
#page-cta .section-inner { display: flex; flex-direction: column; align-items: center; }
#page-cta .section-subtitle { max-width: 560px; margin: 0 auto 2rem; }
#page-cta .hero-actions { display: flex; gap: 1rem; }

/* ── ABOUT ── */
#about { background: var(--bg-alt); }

.about-grid {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 5rem;
 align-items: center;
}

.about-text .section-subtitle { margin-bottom: 2rem; }

.about-pillars { display: flex; flex-direction: column; gap: 1rem; }
.pillar {
 display: flex;
 align-items: flex-start;
 gap: 1rem;
 padding: 1.25rem;
 background: var(--surface-alt);
 border-radius: 8px;
}
.pillar-icon {
 width: 40px; height: 40px;
 background: var(--black);
 border-radius: 6px;
 display: flex; align-items: center; justify-content: center;
 flex-shrink: 0;
 font-size: 1.1rem;
}
.pillar-body h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 0.2rem; }
.pillar-body p { font-size: 0.825rem; color: var(--text-secondary); line-height: 1.5; }

/* ── SERVICES ── */
#services { background: var(--bg); }

.services-header { margin-bottom: 3rem; }

.services-grid {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
 gap: 1.5rem;
}

.service-card {
 background: var(--surface);
 padding: 2rem;
 border: 1.5px solid var(--border);
 border-radius: 10px;
 cursor: default;
 transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
}
.service-card:hover {
 transform: translateY(-12px);
 box-shadow: 0 24px 48px var(--shadow-card);
}

.service-icon {
 font-size: 1.75rem;
 margin-bottom: 1rem;
}

.service-card h3 {
 font-size: 1rem;
 font-weight: 700;
 margin-bottom: 0.6rem;
 letter-spacing: -0.01em;
}

.service-card p {
 font-size: 0.85rem;
 color: var(--text-secondary);
 line-height: 1.65;
}

/* ── PORTFOLIO / CASE STUDY CARDS ── */
.portfolio-header { margin-bottom: 3rem; }

.portfolio-grid {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
 gap: 1.5rem;
}

.portfolio-card {
 background: var(--surface-alt);
 border-radius: 12px;
 overflow: hidden;
 border: 1.5px solid var(--border);
 transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
}
.portfolio-card:hover {
 transform: translateY(-12px);
 box-shadow: 0 24px 48px var(--shadow-card);
}

.portfolio-cover {
 height: 200px;
 background: var(--black);
 display: flex;
 align-items: center;
 justify-content: center;
 position: relative;
 overflow: hidden;
}

.portfolio-cover-text {
 color: var(--white);
 font-size: 2rem;
 font-weight: 800;
 letter-spacing: -0.03em;
 opacity: 0.15;
 user-select: none;
}

.portfolio-cover-badge {
 position: absolute;
 bottom: 1rem; left: 1rem;
 background: var(--white);
 color: var(--black);
 font-size: 0.7rem;
 font-weight: 700;
 letter-spacing: 0.1em;
 text-transform: uppercase;
 padding: 0.3rem 0.7rem;
 border-radius: 3px;
}

.portfolio-body { padding: 1.75rem; }
.portfolio-body h3 {
 font-size: 1.1rem;
 font-weight: 800;
 letter-spacing: -0.02em;
 margin-bottom: 0.4rem;
}
.portfolio-category {
 font-size: 0.75rem;
 color: var(--text-muted);
 font-weight: 600;
 letter-spacing: 0.08em;
 text-transform: uppercase;
 margin-bottom: 0.75rem;
}
.portfolio-body p {
 font-size: 0.875rem;
 color: var(--text-secondary);
 line-height: 1.65;
 margin-bottom: 1.25rem;
}
.portfolio-stats { display: flex; gap: 1.5rem; }
.p-stat { display: flex; flex-direction: column; }
.p-stat-num { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em; }
.p-stat-label { font-size: 0.7rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }

/* Case-study section rhythm on the standalone page */
#portfolio-mobile { background: var(--bg); }
#portfolio-software { background: var(--bg-alt); }

/* ── REVIEWS ── */
#reviews { background: var(--bg); }
.reviews-header { margin-bottom: 2.5rem; }

.reviews-stats {
 display: flex;
 align-items: center;
 justify-content: center;
 gap: 0;
 background: var(--invert-bg);
 border-radius: 12px;
 padding: 2rem 3rem;
 margin-bottom: 3rem;
 flex-wrap: wrap;
}
.rs-item { text-align: center; padding: 0 2.5rem; }
.rs-link { text-decoration: none; transition: opacity 0.2s ease; }
.rs-link:hover { opacity: 0.75; }
.rs-num { font-size: 1.6rem; font-weight: 800; color: var(--invert-text); letter-spacing: -0.03em; }
.rs-label { font-size: 0.7rem; color: rgba(128,128,128,0.9); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; margin-top: 0.2rem; }
.rs-divider { width: 1px; height: 40px; background: rgba(128,128,128,0.35); flex-shrink: 0; }

.reviews-grid {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
 gap: 1.5rem;
}

.review-card {
 background: var(--surface);
 padding: 1.75rem;
 border: 1.5px solid var(--border);
 border-radius: 10px;
 transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
}
.review-card:hover { transform: translateY(-12px); box-shadow: 0 24px 48px var(--shadow-card); }

.review-top { display: flex; align-items: flex-start; gap: 0.875rem; margin-bottom: 1rem; }

.review-avatar {
 width: 44px; height: 44px;
 border-radius: 50%;
 background: var(--black);
 color: var(--white);
 display: flex; align-items: center; justify-content: center;
 font-size: 0.8rem;
 font-weight: 700;
 flex-shrink: 0;
 letter-spacing: 0.02em;
}

.review-meta { flex: 1; }
.review-name { font-size: 0.9rem; font-weight: 700; }
.review-flag { font-size: 0.85rem; }
.review-stars { font-size: 0.8rem; color: #f59e0b; margin-top: 0.1rem; }
.review-stars span { color: var(--text-secondary); font-size: 0.75rem; }

.review-time { font-size: 0.72rem; color: var(--text-muted); white-space: nowrap; flex-shrink: 0; }

.review-project {
 font-size: 0.78rem;
 font-weight: 700;
 color: var(--text-secondary);
 text-transform: uppercase;
 letter-spacing: 0.05em;
 margin-bottom: 0.6rem;
}

.review-text { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.65; font-style: italic; }

/* ── TEAM ── */
#team { background: var(--bg); }

.team-header { margin-bottom: 3rem; }

.team-grid {
 display: grid;
 grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
 gap: 1.5rem;
}

.team-card {
 background: var(--surface);
 padding: 2rem;
 border: 1.5px solid var(--border);
 border-radius: 10px;
 text-align: center;
 transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
}
.team-card:hover { transform: translateY(-12px); box-shadow: 0 24px 48px var(--shadow-card); }

.team-avatar {
 width: 72px; height: 72px;
 border-radius: 50%;
 background: var(--black);
 display: flex; align-items: center; justify-content: center;
 margin: 0 auto 1.25rem;
 font-size: 1.5rem;
 font-weight: 800;
 color: var(--white);
 letter-spacing: -0.02em;
}

.team-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.25rem; }
.team-role { font-size: 0.78rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.75rem; }
.team-card p { font-size: 0.825rem; color: var(--text-secondary); line-height: 1.6; }

/* ── CONTACT ── */
#contact { background: var(--bg); color: var(--text); }

.contact-grid {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 5rem;
 align-items: start;
}

.contact-details { margin-top: 2.5rem; display: flex; flex-direction: column; gap: 1.25rem; }
.contact-item { display: flex; align-items: center; gap: 1rem; }
.contact-item-icon {
 width: 44px; height: 44px;
 border: 1.5px solid var(--border-strong);
 border-radius: 8px;
 display: flex; align-items: center; justify-content: center;
 font-size: 1.1rem;
 flex-shrink: 0;
}
.contact-item-body {}
.contact-item-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; }
.contact-item-value { font-size: 0.95rem; color: var(--text); font-weight: 500; }
.contact-item-value a { color: var(--text); text-decoration: none; }
.contact-item-value a:hover { text-decoration: underline; }

/* Contact form is a deliberately fixed dark panel, independent of site theme */
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.78rem; color: #aaa; font-weight: 500; letter-spacing: 0.05em; }
.form-group input,
.form-group textarea {
 background: #1a1a1a;
 border: 1.5px solid #333;
 border-radius: 6px;
 padding: 0.875rem 1rem;
 color: var(--white);
 font-family: var(--font);
 font-size: 0.9rem;
 outline: none;
 transition: border-color var(--transition);
 resize: none;
}
.form-group input:focus,
.form-group textarea:focus { border-color: #666; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: #555; }

.btn-send {
 background: var(--white);
 color: var(--black);
 border: none;
 padding: 0.9rem 2rem;
 border-radius: 4px;
 font-weight: 700;
 font-size: 0.9rem;
 cursor: pointer;
 transition: var(--transition);
 align-self: flex-start;
 letter-spacing: 0.02em;
}
.btn-send:hover { background: var(--gray-200); transform: translateY(-1px); }

/* ── FOOTER ── */
/* Footer is a deliberately fixed dark bar, independent of site theme */
footer {
 background: #050505;
 color: #555;
 padding: 2rem 5%;
}
.footer-inner {
 max-width: 1200px;
 margin: 0 auto;
 display: flex;
 align-items: center;
 justify-content: space-between;
 flex-wrap: wrap;
 gap: 1rem;
}
.footer-logo img { height: 28px; filter: invert(1); opacity: 0.6; }
.footer-copy { font-size: 0.8rem; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: #555; text-decoration: none; font-size: 0.8rem; transition: color var(--transition); }
.footer-links a:hover { color: #999; }

/* ── THEME TOGGLE BUTTON ── */
.theme-toggle {
 background: none;
 border: 1.5px solid var(--border-strong);
 border-radius: 8px;
 width: 38px; height: 38px;
 display: flex; align-items: center; justify-content: center;
 cursor: pointer;
 color: var(--text);
 transition: var(--transition);
 flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--text); background: var(--bg-alt); }
.icon-sun { display: none; }
.icon-moon { display: block; }

/* ── DARK THEME ──
 Redefines the theme tokens from :root. This is the only place dark
 colors should be declared — components elsewhere consume the tokens
 above and never need their own body.dark rule for color. Anything
 still listed individually below is a genuinely non-color mechanic
 (filters, icon visibility) that variables can't express. */
body.dark {
 --bg: #0a0a0a;
 --bg-alt: #111111;
 --surface: #111111;
 --surface-alt: #1a1a1a;
 --inset: #1a1a1a;
 --text: #ffffff;
 --text-secondary: #888888;
 --text-muted: #666666;
 --border: #2a2a2a;
 --border-strong: #333333;
 --invert-bg: #ffffff;
 --invert-text: #000000;
 --invert-hover: #e8e8e8;
 --nav-bg: rgba(10, 10, 10, 0.95);
 --shadow-card: rgba(255, 255, 255, 0.08);
 --shadow-lg: rgba(0, 0, 0, 0.4);

 background: var(--bg);
 color: var(--text);
}

body.dark .nav-logo img { filter: invert(1); }
body.dark .theme-toggle:hover { border-color: #555; }
body.dark .icon-sun { display: block; }
body.dark .icon-moon { display: none; }

body.dark #contact iframe {
 filter: invert(1) hue-rotate(180deg);
 border-radius: 8px;
}

/* ── SCROLL TO TOP ── */
#scrollTop {
 position: fixed;
 bottom: 2rem;
 right: 2rem;
 width: 44px; height: 44px;
 background: var(--invert-bg);
 color: var(--invert-text);
 border: none;
 border-radius: 50%;
 display: flex; align-items: center; justify-content: center;
 cursor: pointer;
 z-index: 99;
 opacity: 0;
 pointer-events: none;
 transform: translateY(10px);
 transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
 box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
#scrollTop.visible { opacity: 1; pointer-events: all; transform: translateY(0); }
#scrollTop:hover { background: var(--invert-hover); transform: translateY(-3px); }

/* ── SCROLL ANIMATIONS ── */
.fade-up {
 opacity: 0;
 transform: translateY(24px);
 transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
 .nav-links { display: none; }
 .hamburger { display: flex; }
 .nav-links.open {
 display: flex;
 flex-direction: column;
 position: fixed;
 top: 64px; left: 0; right: 0;
 background: var(--bg);
 padding: 2rem 5%;
 border-bottom: 1px solid var(--border);
 gap: 1.5rem;
 }
 .hero-grid { grid-template-columns: 1fr; }
 .hero-visual { display: none; }
 .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
 .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
 .form-row { grid-template-columns: 1fr; }
 .footer-inner { flex-direction: column; text-align: center; }
}