/* --- ZA TECHNOLOGIES — CORPORATE IT CONSULTING --- */

:root {
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-sans: 'Inter', 'Plus Jakarta Sans', sans-serif;
    --transition-speed: 0.3s;
    --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --header-height: 76px;
    --radius: 16px;
}

/* Brand tokens (shared) */
:root {
    --navy: #0A2540;
    --tech-blue: #1E6FE8;
    --teal: #00C2B2;
    --slate: #64748B;
}

body.light-theme {
    --bg-main: #FFFFFF;
    --bg-soft: #F4F7FB;
    --bg-card: #FFFFFF;
    --bg-header: rgba(255, 255, 255, 0.85);
    --text-primary: #0A2540;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --border-color: rgba(10, 37, 64, 0.10);
    --shadow-sm: 0 2px 10px rgba(10, 37, 64, 0.06);
    --shadow-md: 0 12px 35px rgba(10, 37, 64, 0.10);
    --primary: var(--tech-blue);
    --primary-ink: #FFFFFF;
}

body.dark-theme {
    --bg-main: #060D18;
    --bg-soft: #0C1626;
    --bg-card: rgba(18, 30, 48, 0.7);
    --bg-header: rgba(6, 13, 24, 0.85);
    --text-primary: #E8EEF7;
    --text-secondary: #9FB0C6;
    --text-muted: #64748B;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 12px 35px rgba(0, 0, 0, 0.45);
    --primary: var(--tech-blue);
    --primary-ink: #FFFFFF;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }

body {
    background: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background var(--transition-speed) var(--transition-ease),
                color var(--transition-speed) var(--transition-ease);
}

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--font-heading); font-weight: 700; line-height: 1.15; color: var(--text-primary); }
h1 { font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); letter-spacing: -0.01em; }
a { color: inherit; text-decoration: none; }

/* --- BUTTONS --- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 13px 26px; border-radius: 12px; font-weight: 600; font-size: 0.95rem;
    border: 1px solid transparent; cursor: pointer;
    transition: transform var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease),
                background var(--transition-speed) var(--transition-ease);
}
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn-primary { background: var(--primary); color: var(--primary-ink); box-shadow: 0 8px 20px rgba(30, 111, 232, 0.25); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(30, 111, 232, 0.35); }
.btn-secondary { background: transparent; color: var(--text-primary); border-color: var(--border-color); }
.btn-secondary:hover { transform: translateY(-2px); border-color: var(--primary); color: var(--primary); }

/* --- HEADER --- */
.header {
    position: fixed; top: 0; left: 0; right: 0; height: var(--header-height); z-index: 100;
    background: var(--bg-header); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-speed) var(--transition-ease);
}
.header-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand-logo { display: flex; align-items: center; gap: 10px; }
.logo-mark { font-family: var(--font-heading); font-weight: 800; font-size: 1.4rem; color: var(--navy); letter-spacing: -0.02em; }
body.dark-theme .logo-mark { color: var(--text-primary); }
.logo-dot { color: var(--tech-blue); }
.logo-text { font-weight: 600; font-size: 1rem; color: var(--text-secondary); }
.nav { display: flex; gap: 28px; }
.nav-link { font-size: 0.92rem; font-weight: 500; color: var(--text-secondary); position: relative; transition: color var(--transition-speed); }
.nav-link::after { content: ''; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--primary); transition: width var(--transition-speed); }
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-switch { display: flex; align-items: center; gap: 4px; font-size: 0.85rem; font-weight: 600; }
.lang-btn { background: none; border: none; cursor: pointer; color: var(--text-muted); font-weight: 600; padding: 2px 4px; transition: color var(--transition-speed); }
.lang-btn.active { color: var(--primary); }
.lang-sep { color: var(--text-muted); }
.theme-btn, .menu-toggle { background: none; border: 1px solid var(--border-color); width: 38px; height: 38px; border-radius: 10px; cursor: pointer; color: var(--text-secondary); transition: color var(--transition-speed), border-color var(--transition-speed); }
.theme-btn:hover, .menu-toggle:hover { color: var(--primary); border-color: var(--primary); }
.menu-toggle { display: none; }

/* --- HERO --- */
.hero { position: relative; padding: calc(var(--header-height) + 70px) 0 90px; overflow: hidden; }
.hero-bg-grid {
    position: absolute; inset: 0; z-index: 0;
    background-image: linear-gradient(var(--border-color) 1px, transparent 1px), linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 20%, #000 30%, transparent 75%);
    mask-image: radial-gradient(ellipse 70% 60% at 70% 20%, #000 30%, transparent 75%);
    opacity: 0.6;
}
.hero-container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: center; }
.badge { display: inline-block; padding: 7px 16px; border-radius: 999px; background: rgba(30, 111, 232, 0.10); color: var(--primary); font-size: 0.8rem; font-weight: 600; margin-bottom: 22px; }
.hero-desc { font-size: 1.12rem; color: var(--text-secondary); margin: 22px 0 30px; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 46px; }
.hero-stat { display: flex; flex-direction: column; }
.hero-stat strong { font-family: var(--font-heading); font-size: 1.8rem; color: var(--primary); }
.hero-stat span { font-size: 0.85rem; color: var(--text-muted); }

/* Hero visual card */
.hero-visual { display: flex; justify-content: center; }
.hero-card { width: 100%; max-width: 380px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); box-shadow: var(--shadow-md); overflow: hidden; }
.hero-card-head { display: flex; align-items: center; gap: 7px; padding: 14px 18px; border-bottom: 1px solid var(--border-color); }
.hero-card-head .dot { width: 11px; height: 11px; border-radius: 50%; background: var(--border-color); }
.hero-card-head .dot:nth-child(1) { background: #FF5F57; } .hero-card-head .dot:nth-child(2) { background: #FEBC2E; } .hero-card-head .dot:nth-child(3) { background: #28C840; }
.hero-card-title { margin-left: auto; font-size: 0.8rem; color: var(--text-muted); font-weight: 600; }
.hero-card-body { padding: 22px 20px; }
.metric { margin-bottom: 16px; }
.metric span { font-size: 0.82rem; color: var(--text-secondary); display: block; margin-bottom: 6px; }
.bar { height: 8px; background: var(--bg-soft); border-radius: 999px; overflow: hidden; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--tech-blue), var(--teal)); border-radius: 999px; }
.chart { display: flex; align-items: flex-end; gap: 8px; height: 80px; margin-top: 20px; }
.chart span { flex: 1; background: linear-gradient(180deg, var(--tech-blue), rgba(30, 111, 232, 0.3)); border-radius: 6px 6px 0 0; }

/* --- SECTIONS --- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-soft); }
.section-header { max-width: 680px; margin: 0 auto 52px; }
.text-center { text-align: center; }
.section-badge { display: inline-block; padding: 6px 14px; border-radius: 999px; background: rgba(0, 194, 178, 0.12); color: var(--teal); font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 16px; }
.section-subtitle { color: var(--text-secondary); font-size: 1.05rem; margin-top: 14px; }

/* --- GRID & CARDS --- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: transform var(--transition-speed) var(--transition-ease), box-shadow var(--transition-speed) var(--transition-ease); }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.card-icon { width: 52px; height: 52px; border-radius: 13px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--tech-blue), var(--teal)); color: #fff; font-size: 1.3rem; margin-bottom: 18px; }
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { color: var(--text-secondary); font-size: 0.95rem; }
.exp-card { text-align: left; }
.exp-card > i { font-size: 1.6rem; color: var(--primary); margin-bottom: 14px; display: block; }

/* --- CLIENTS GRID --- */
.clients-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; }
.client-item { aspect-ratio: 16 / 9; display: flex; align-items: center; justify-content: center; padding: 26px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; box-shadow: var(--shadow-sm); transition: transform var(--transition-speed) var(--transition-ease), box-shadow var(--transition-speed) var(--transition-ease), border-color var(--transition-speed); }
.client-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.client-item img { max-width: min(100%, 140px); max-height: 64px; object-fit: contain; transition: transform var(--transition-speed) var(--transition-ease); }
.client-item:hover img { transform: scale(1.05); }
.client-item span { font-family: var(--font-heading); font-weight: 700; color: var(--text-secondary); font-size: 1rem; text-align: center; }
body.dark-theme .client-item img { filter: brightness(0) invert(0.92); }
.clients-empty { text-align: center; color: var(--text-muted); margin-top: 28px; font-style: italic; }
.clients-empty.hidden { display: none; }

@media (max-width: 860px) { .clients-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) {
    .clients-grid { grid-template-columns: 1fr; gap: 14px; }
    .client-item { aspect-ratio: auto; padding: 16px 24px; }
    .client-item img { max-height: 40px; }
}

/* --- STEPS --- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.step-num { font-family: var(--font-heading); font-size: 2rem; font-weight: 800; color: rgba(30, 111, 232, 0.25); display: block; margin-bottom: 8px; }
.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--text-secondary); font-size: 0.92rem; }

/* --- CTA BAND --- */
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; padding: 44px; border-radius: var(--radius); background: linear-gradient(120deg, var(--navy), var(--tech-blue)); color: #fff; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255, 255, 255, 0.85); margin-top: 8px; }
.cta-band .btn-primary { background: #fff; color: var(--navy); }

/* --- CONTACT --- */
.contact-wrap { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input, .contact-form textarea { width: 100%; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--border-color); background: var(--bg-card); color: var(--text-primary); font-family: inherit; font-size: 0.95rem; transition: border-color var(--transition-speed); }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--primary); }
.contact-info h3 { margin-bottom: 16px; }
.contact-info p { color: var(--text-secondary); margin-bottom: 12px; display: flex; align-items: flex-start; gap: 10px; }
.contact-info i { color: var(--primary); margin-top: 4px; }
.map-placeholder { margin-top: 16px; height: 160px; border-radius: 12px; background: var(--bg-soft); border: 1px dashed var(--border-color); display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 2rem; }

/* --- FOOTER --- */
.footer { background: var(--bg-soft); border-top: 1px solid var(--border-color); padding: 44px 0; }
.footer-container { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; align-items: center; }
.footer-brand p { color: var(--text-secondary); margin-top: 8px; font-size: 0.9rem; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: var(--text-secondary); font-size: 0.9rem; transition: color var(--transition-speed); }
.footer-links a:hover { color: var(--primary); }
.footer-legal { text-align: right; color: var(--text-muted); font-size: 0.82rem; }

/* --- TOAST --- */
.toast { position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%) translateY(120px); background: var(--navy); color: #fff; padding: 14px 24px; border-radius: 12px; box-shadow: var(--shadow-md); z-index: 200; opacity: 0; transition: transform 0.4s var(--transition-ease), opacity 0.4s; }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* --- REVEAL ANIMATION --- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--transition-ease), transform 0.6s var(--transition-ease); }
.reveal.visible { opacity: 1; transform: none; }

/* --- RESPONSIVE --- */
@media (max-width: 980px) {
    .hero-container { grid-template-columns: 1fr; }
    .hero-visual { order: -1; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .contact-wrap { grid-template-columns: 1fr; }
    .nav { position: fixed; top: var(--header-height); left: 0; right: 0; flex-direction: column; gap: 0; background: var(--bg-header); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border-color); padding: 10px 24px; transform: translateY(-150%); transition: transform var(--transition-speed) var(--transition-ease); }
    .nav.open { transform: translateY(0); }
    .nav-link { padding: 12px 0; }
    .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
}
@media (max-width: 560px) {
    .grid-4, .grid-3, .steps { grid-template-columns: 1fr; }
    .hero-stats { gap: 22px; }
    .form-row { grid-template-columns: 1fr; }
    .footer-legal { text-align: left; }
    .logo-text { display: none; }
}