/* =====================================================
   REV Fire & Security Solutions — style.css
   Premium Dark Theme | Cinematic Corporate Design
   ===================================================== */

/* ─── CSS Custom Properties ─────────────────────────── */
:root {
    --black:      #0a0a0a;
    --bg-1:       #0e0e0e;
    --bg-2:       #111111;
    --bg-3:       #161616;
    --surface:    #1a1a1a;
    --surface-2:  #202020;
    --border:     rgba(255,255,255,0.07);
    --border-2:   rgba(255,255,255,0.12);

    --red:        #ff2c2c;
    --red-light:  #ff5555;
    --red-dark:   #cc1c1c;
    --red-glow:   rgba(255, 44, 44, 0.25);
    --red-glow-sm:rgba(255, 44, 44, 0.12);

    --text-1:     #ffffff;
    --text-2:     #b0b0b0;
    --text-3:     #6a6a6a;

    --font:       'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --nav-h:      72px;
    --max-w:      1200px;
    --section-py: 110px;

    --ease:       cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in:    cubic-bezier(0.4, 0, 1, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--red-dark) var(--bg-2);
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--red-dark); border-radius: 3px; }

body {
    font-family: var(--font);
    background: var(--black);
    color: var(--text-1);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
input, textarea, select { font-family: var(--font); }
::selection { background: var(--red); color: #fff; }

/* ─── Loading Screen ─────────────────────────────────── */
#loader {
    position: fixed;
    inset: 0;
    background: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s var(--ease), visibility 0.6s;
}

#loader.loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    animation: loaderFadeIn 0.6s var(--ease) forwards;
}

@keyframes loaderFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.loader-logo-wrap {
    display: flex;
    align-items: center;
    gap: 16px;
}

.loader-flame {
    width: 48px;
    height: 60px;
    animation: loaderFlame 1.2s ease-in-out infinite alternate;
    filter: drop-shadow(0 0 12px rgba(255,100,40,0.6));
}

@keyframes loaderFlame {
    from { transform: scaleY(1) translateY(0); }
    to   { transform: scaleY(1.08) translateY(-3px); }
}

.loader-text-wrap {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.loader-rev {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 6px;
    color: #fff;
    text-shadow: 0 0 30px var(--red-glow);
}

.loader-sub {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 4px;
    color: var(--text-2);
    margin-top: 4px;
}

.loader-progress-wrap {
    width: 260px;
    height: 2px;
    background: rgba(255,255,255,0.08);
    border-radius: 2px;
    overflow: hidden;
}

.loader-progress {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--red-dark), var(--red), #ff6b35);
    border-radius: 2px;
    transition: width 0.2s ease;
    box-shadow: 0 0 10px var(--red);
}

.loader-status {
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--text-3);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    min-height: 1em;
}

/* ─── Navigation ─────────────────────────────────────── */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    z-index: 1000;
    transition: background 0.4s ease, border-bottom 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 6px 0;
}

.site-logo {
    width: auto;
    height: auto;
    display: block;
    transform-origin: center;
    transition: transform 0.35s var(--ease), filter 0.35s var(--ease), opacity 0.35s var(--ease);
}

.site-logo-nav {
    height: 46px;
    max-width: min(310px, 40vw);
    filter: drop-shadow(0 0 10px rgba(255, 44, 44, 0.18)) drop-shadow(0 0 24px rgba(255, 44, 44, 0.08));
}

.nav-logo:hover .site-logo-nav {
    transform: translateY(-1px) scale(1.01);
    filter: drop-shadow(0 0 14px rgba(255, 44, 44, 0.32)) drop-shadow(0 0 32px rgba(255, 44, 44, 0.14));
}

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

.nav-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-2);
    padding: 8px 14px;
    border-radius: 6px;
    letter-spacing: 0.3px;
    transition: color 0.2s, background 0.2s;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: calc(100% - 28px);
    height: 1px;
    background: var(--red);
    border-radius: 1px;
    transition: transform 0.25s var(--ease);
}

.nav-link:hover { color: #fff; }
.nav-link:hover::after { transform: translateX(-50%) scaleX(1); }

.nav-link-cta {
    background: var(--red);
    color: #fff !important;
    padding: 9px 20px;
    border-radius: 8px;
    font-weight: 600;
    box-shadow: 0 0 20px var(--red-glow);
    transition: background 0.2s, box-shadow 0.2s, transform 0.2s !important;
}

.nav-link-cta::after { display: none; }
.nav-link-cta:hover { background: var(--red-light); box-shadow: 0 0 30px rgba(255,44,44,0.5); transform: translateY(-1px); }

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

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

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Utility / Shared ───────────────────────────────── */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
}

.section {
    padding: var(--section-py) 0;
    position: relative;
}

.section-alt { background: var(--bg-2); }

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

.section-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--red);
    border: 1px solid rgba(255,44,44,0.3);
    border-radius: 20px;
    padding: 5px 16px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1rem;
    color: var(--text-2);
    max-width: 540px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Scroll reveal */
.fade-up {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Stagger for grid children */
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.15s; }
.fade-up:nth-child(6) { transition-delay: 0.25s; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 10px;
    padding: 14px 28px;
    transition: all 0.25s var(--ease);
    letter-spacing: 0.2px;
    white-space: nowrap;
}

.btn svg { width: 16px; height: 16px; transition: transform 0.2s; }
.btn:hover svg { transform: translateX(3px); }

.btn-primary {
    background: var(--red);
    color: #fff;
    box-shadow: 0 4px 24px var(--red-glow);
}

.btn-primary:hover {
    background: var(--red-light);
    box-shadow: 0 6px 32px rgba(255,44,44,0.45);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-2);
    border: 1px solid var(--border-2);
}

.btn-ghost:hover {
    color: #fff;
    border-color: rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.05);
    transform: translateY(-2px);
}

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

/* ─── Hero Section ───────────────────────────────────── */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#heroCanvas {
    position: absolute;
    inset: 0;
    width: 100% !important;
    height: 100% !important;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 60%, rgba(10,10,10,0.2) 0%, rgba(10,10,10,0.75) 60%, rgba(10,10,10,0.97) 100%);
    z-index: 1;
}

.hero-scanlines {
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 3px,
        rgba(0,0,0,0.06) 3px,
        rgba(0,0,0,0.06) 4px
    );
    z-index: 2;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 820px;
    padding: 0 24px;
}

.hero-logo-wrap {
    display: flex;
    justify-content: center;
    margin: 0 auto 24px;
    padding: 16px 22px;
    width: fit-content;
    max-width: min(100%, 760px);
    background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 22px;
    box-shadow: 0 24px 80px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    animation: heroLogoIn 0.9s 0.2s var(--ease) forwards;
}

.site-logo-hero {
    height: 112px;
    max-width: min(100%, 620px);
    filter: drop-shadow(0 0 20px rgba(255, 44, 44, 0.18)) drop-shadow(0 0 46px rgba(255, 44, 44, 0.09));
    animation: logoGlowPulse 3.8s ease-in-out infinite;
}

@keyframes heroLogoIn {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes logoGlowPulse {
    0%, 100% { filter: drop-shadow(0 0 18px rgba(255, 44, 44, 0.18)) drop-shadow(0 0 42px rgba(255, 44, 44, 0.08)); }
    50% { filter: drop-shadow(0 0 22px rgba(255, 44, 44, 0.28)) drop-shadow(0 0 54px rgba(255, 44, 44, 0.16)); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--red-light);
    border: 1px solid rgba(255,44,44,0.3);
    background: rgba(255,44,44,0.07);
    border-radius: 20px;
    padding: 6px 18px;
    margin-bottom: 28px;
    opacity: 0;
    animation: heroBadgeIn 0.8s 0.4s var(--ease) forwards;
}

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

@keyframes pulseDot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,44,44,0.6); }
    50%       { box-shadow: 0 0 0 5px rgba(255,44,44,0); }
}

@keyframes heroBadgeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-title {
    font-size: clamp(2.6rem, 6vw, 4.8rem);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
    opacity: 0;
    animation: heroTitleIn 1s 0.6s var(--ease) forwards;
}

@keyframes heroTitleIn {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.title-accent {
    background: linear-gradient(90deg, var(--red-light), #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.35rem);
    font-weight: 300;
    color: var(--text-2);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 40px;
    opacity: 0;
    animation: heroSubIn 0.9s 0.8s var(--ease) forwards;
}

@keyframes heroSubIn {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: heroActionsIn 0.8s 1s var(--ease) forwards;
}

@keyframes heroActionsIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Scroll indicator */
.hero-scroll {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0;
    animation: heroActionsIn 0.8s 1.3s var(--ease) forwards;
}

.hero-scroll span {
    font-size: 0.65rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--text-3);
}

.scroll-line-wrap {
    width: 1px;
    height: 48px;
    background: rgba(255,255,255,0.1);
    border-radius: 1px;
    overflow: hidden;
}

.scroll-line-inner {
    width: 100%;
    height: 50%;
    background: var(--red);
    border-radius: 1px;
    animation: scrollLine 1.8s ease-in-out infinite;
}

@keyframes scrollLine {
    0%   { transform: translateY(-100%); opacity: 1; }
    100% { transform: translateY(200%); opacity: 0.3; }
}

/* Hero floating chips */
.hero-chip {
    position: absolute;
    z-index: 3;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-2);
    border-radius: 12px;
    padding: 12px 18px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    opacity: 0;
    animation: chipIn 0.8s var(--ease) forwards;
}

.hero-chip-1 { bottom: 22%; left: 7%; animation-delay: 1.4s; }
.hero-chip-2 { bottom: 30%; right: 7%; animation-delay: 1.6s; flex-direction: row; align-items: center; gap: 8px; }

@keyframes chipIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.chip-num   { font-size: 1.4rem; font-weight: 800; color: #fff; }
.chip-label { font-size: 0.68rem; color: var(--text-3); font-weight: 500; letter-spacing: 0.5px; }

.chip-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.chip-dot-green {
    background: #22c55e;
    box-shadow: 0 0 8px rgba(34,197,94,0.5);
    animation: pulseDot 2s infinite;
}

/* ─── About Section ──────────────────────────────────── */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text .section-tag { margin-bottom: 12px; }
.about-text .section-title { margin-bottom: 20px; text-align: left; }

.about-desc {
    color: var(--text-2);
    line-height: 1.75;
    margin-bottom: 12px;
}

.about-desc-secondary {
    color: var(--text-3);
    font-size: 0.92rem;
    line-height: 1.75;
    margin-bottom: 40px;
}

.about-stats {
    display: flex;
    gap: 36px;
    padding-top: 36px;
    border-top: 1px solid var(--border);
}

.about-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.counter {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.counter-suffix {
    font-size: 2rem;
    font-weight: 800;
    color: var(--red);
    line-height: 1;
    margin-left: 2px;
}

.stat-label {
    font-size: 0.78rem;
    color: var(--text-3);
    font-weight: 500;
    letter-spacing: 0.3px;
}

.about-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-feature {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px 20px;
    transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}

.about-feature:hover {
    border-color: rgba(255,44,44,0.3);
    background: var(--surface-2);
    box-shadow: 0 0 24px var(--red-glow-sm);
}

.about-feature-icon {
    width: 44px;
    height: 44px;
    background: rgba(255,44,44,0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}

.about-feature-icon svg {
    width: 22px;
    height: 22px;
    color: var(--red);
}

.about-feature h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.about-feature p {
    font-size: 0.8rem;
    color: var(--text-3);
    line-height: 1.5;
}

/* ─── Services Section ───────────────────────────────── */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.service-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.4s, transform 0.3s var(--ease);
    overflow: hidden;
}

.service-card-glow {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(255,44,44,0.18) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.service-card:hover { border-color: rgba(255,44,44,0.4); transform: translateY(-4px); }
.service-card:hover .service-card-glow { opacity: 1; }

.service-icon-wrap {
    width: 56px;
    height: 56px;
    background: rgba(255,44,44,0.1);
    border: 1px solid rgba(255,44,44,0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: background 0.3s, box-shadow 0.3s;
}

.service-card:hover .service-icon-wrap {
    background: rgba(255,44,44,0.18);
    box-shadow: 0 0 20px var(--red-glow-sm);
}

.service-icon-wrap svg {
    width: 26px;
    height: 26px;
    color: var(--red);
}

.service-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.2px;
}

.service-desc {
    font-size: 0.85rem;
    color: var(--text-2);
    line-height: 1.65;
    margin-bottom: 20px;
}

.service-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.service-list li {
    font-size: 0.8rem;
    color: var(--text-3);
    padding-left: 14px;
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    background: var(--red);
    border-radius: 50%;
    opacity: 0.7;
}

.service-cta {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--red-light);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s;
    margin-top: auto;
}

.service-cta span { transition: transform 0.2s; }
.service-cta:hover span { transform: translateX(4px); }

/* ─── Why Choose Us ──────────────────────────────────── */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.why-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px 24px;
    text-align: center;
    transition: border-color 0.4s, transform 0.3s var(--ease), box-shadow 0.4s;
}

.why-card:hover {
    border-color: rgba(255,44,44,0.3);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 30px var(--red-glow-sm);
}

.why-icon-ring {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(255,44,44,0.08);
    border: 1.5px solid rgba(255,44,44,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: background 0.3s, box-shadow 0.3s;
}

.why-card:hover .why-icon-ring {
    background: rgba(255,44,44,0.15);
    box-shadow: 0 0 24px var(--red-glow);
}

.why-icon-ring svg {
    width: 28px;
    height: 28px;
    color: var(--red);
}

.why-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.2px;
}

.why-card p {
    font-size: 0.83rem;
    color: var(--text-2);
    line-height: 1.65;
    margin-bottom: 20px;
}

.why-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--red-light);
    background: rgba(255,44,44,0.1);
    border: 1px solid rgba(255,44,44,0.2);
    border-radius: 20px;
    padding: 4px 12px;
}

/* ─── Projects Section ───────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    transition: border-color 0.4s, box-shadow 0.4s;
    transform-style: preserve-3d;
    /* Tilt is set via JS */
    transition: transform 0.1s ease-out, border-color 0.4s, box-shadow 0.4s;
}

.project-card:hover {
    border-color: rgba(255,44,44,0.25);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.project-thumb {
    position: relative;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-thumb-icon {
    width: 64px;
    height: 64px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-thumb-icon svg {
    width: 30px;
    height: 30px;
    color: rgba(255,255,255,0.5);
}

.project-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--red-light);
    background: rgba(255,44,44,0.15);
    border: 1px solid rgba(255,44,44,0.3);
    border-radius: 6px;
    padding: 4px 10px;
}

.project-info {
    padding: 20px 22px 22px;
}

.project-info h3 {
    font-size: 0.97rem;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: -0.2px;
    transition: color 0.2s;
}

.project-card:hover .project-info h3 { color: var(--red-light); }

.project-info p {
    font-size: 0.8rem;
    color: var(--text-3);
    line-height: 1.55;
    margin-bottom: 10px;
}

.project-meta {
    font-size: 0.7rem;
    color: var(--text-3);
    font-weight: 500;
    letter-spacing: 0.5px;
    opacity: 0.7;
}

/* ─── Contact Section ────────────────────────────────── */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.contact-info-title {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.3px;
}

.contact-info-desc {
    font-size: 0.9rem;
    color: var(--text-2);
    line-height: 1.7;
    margin-bottom: 36px;
}

.contact-items { display: flex; flex-direction: column; gap: 20px; margin-bottom: 36px; }

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon-wrap {
    width: 44px;
    height: 44px;
    background: rgba(255,44,44,0.1);
    border: 1px solid rgba(255,44,44,0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon-wrap svg {
    width: 18px;
    height: 18px;
    color: var(--red);
}

.contact-item-label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-3);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 3px;
}

.contact-item-value {
    font-size: 0.9rem;
    color: var(--text-1);
    font-weight: 500;
}

.contact-cert-badges {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.cert-badge {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-3);
    border: 1px solid var(--border-2);
    border-radius: 20px;
    padding: 5px 14px;
}

/* Glassmorphism form */
.contact-form.glass {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-2);
    border-radius: 24px;
    padding: 40px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.contact-form.glass::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -60px;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(255,44,44,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.form-group label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-3);
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-2);
    border-radius: 10px;
    padding: 13px 16px;
    font-size: 0.88rem;
    color: var(--text-1);
    outline: none;
    transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
    width: 100%;
    -webkit-appearance: none;
}

.form-group select option { background: var(--bg-3); }

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-3);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: rgba(255,44,44,0.5);
    box-shadow: 0 0 0 3px rgba(255,44,44,0.08);
    background: rgba(255,255,255,0.06);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.form-success {
    display: none;
    align-items: center;
    gap: 10px;
    background: rgba(34,197,94,0.08);
    border: 1px solid rgba(34,197,94,0.25);
    border-radius: 10px;
    padding: 14px 18px;
    font-size: 0.87rem;
    color: #4ade80;
    margin-top: 12px;
}

.form-success svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.form-success.show { display: flex; }

/* ─── Footer ─────────────────────────────────────────── */
#footer {
    background: var(--bg-2);
    border-top: 1px solid var(--border);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 56px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 28px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.site-logo-footer {
    height: 36px;
    max-width: min(100%, 250px);
    filter: drop-shadow(0 0 10px rgba(255, 44, 44, 0.16));
}

.footer-logo:hover .site-logo-footer {
    transform: translateY(-1px);
    filter: drop-shadow(0 0 14px rgba(255, 44, 44, 0.24));
}

.footer-tagline {
    font-size: 0.83rem;
    color: var(--text-3);
    line-height: 1.65;
    margin-bottom: 24px;
}

.footer-socials { display: flex; gap: 10px; }

.social-link {
    width: 36px;
    height: 36px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-3);
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.social-link:hover {
    background: rgba(255,44,44,0.1);
    border-color: rgba(255,44,44,0.3);
    color: var(--red-light);
}

.footer-col h4 {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-2);
    margin-bottom: 18px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }

.footer-col ul li a {
    font-size: 0.84rem;
    color: var(--text-3);
    transition: color 0.2s;
}

.footer-col ul li a:hover { color: var(--red-light); }

.footer-contact-list li {
    font-size: 0.82rem;
    color: var(--text-3);
    line-height: 1.5;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: var(--text-3);
}

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

.footer-bottom-links a {
    font-size: 0.78rem;
    color: var(--text-3);
    transition: color 0.2s;
}

.footer-bottom-links a:hover { color: var(--text-2); }

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 1100px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .why-grid      { grid-template-columns: repeat(2, 1fr); }
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid   { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 900px) {
    :root { --section-py: 80px; }

    .about-grid   { grid-template-columns: 1fr; gap: 48px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-chip    { display: none; }

    .nav-links {
        position: fixed;
        inset: 0;
        top: var(--nav-h);
        background: rgba(10,10,10,0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 20px;
        transform: translateX(100%);
        transition: transform 0.4s var(--ease);
    }

    .nav-links.open { transform: translateX(0); }
    .nav-link { font-size: 1.2rem; padding: 12px 24px; }
    .nav-toggle { display: flex; }
    .site-logo-nav { height: 42px; max-width: 230px; }
    .site-logo-hero { height: 94px; }
    .hero-logo-wrap { margin-bottom: 22px; padding: 14px 18px; }
}

@media (max-width: 640px) {
    :root { --section-py: 64px; }
    .container { padding: 0 20px; }

    .services-grid { grid-template-columns: 1fr; }
    .why-grid      { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    .footer-grid   { grid-template-columns: 1fr; }
    .about-stats   { flex-direction: column; gap: 20px; }
    .about-cards   { grid-template-columns: 1fr; }
    .form-row      { grid-template-columns: 1fr; }
    .contact-form.glass { padding: 24px 20px; }
    .hero-title    { font-size: 2.4rem; letter-spacing: -1px; }
    .hero-actions  { flex-direction: column; align-items: center; }
    .site-logo-nav { height: 38px; max-width: 190px; }
    .site-logo-hero { height: 78px; max-width: 100%; }
    .site-logo-footer { height: 32px; }
    .hero-logo-wrap {
        width: 100%;
        max-width: 100%;
        padding: 12px 14px;
        border-radius: 18px;
        margin-bottom: 18px;
    }
    .footer-logo { justify-content: center; }
    .footer-brand { text-align: center; }
    .footer-socials { justify-content: center; }
}

.contact-item-value {
    display: block;
    font-size: 0.9rem;
    color: var(--text-1);
    font-weight: 500;
    line-height: 1.5;
}

.chat-widget {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 2000;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--red);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 28px rgba(255,44,44,0.5), 0 2px 8px rgba(0,0,0,0.4);
    transition: transform 0.3s var(--ease), box-shadow 0.3s;
    position: relative;
}

.chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 36px rgba(255,44,44,0.65), 0 2px 12px rgba(0,0,0,0.4);
}

.chat-toggle svg {
    width: 24px;
    height: 24px;
    position: absolute;
    transition: opacity 0.25s, transform 0.3s var(--ease);
}

.chat-icon-chat { opacity: 1; transform: scale(1); }
.chat-icon-x    { opacity: 0; transform: scale(0.5) rotate(-90deg); }

.chat-widget.open .chat-icon-chat { opacity: 0; transform: scale(0.5) rotate(90deg); }
.chat-widget.open .chat-icon-x    { opacity: 1; transform: scale(1) rotate(0deg); }

.chat-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 20px;
    height: 20px;
    background: #22c55e;
    color: #fff;
    font-size: 0.65rem;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--black);
    animation: badgePop 0.4s var(--ease);
    transition: opacity 0.2s, transform 0.2s;
}

.chat-badge.hidden { opacity: 0; transform: scale(0); pointer-events: none; }

@keyframes badgePop {
    0%   { transform: scale(0); }
    70%  { transform: scale(1.25); }
    100% { transform: scale(1); }
}

.chat-window {
    position: absolute;
    bottom: 76px;
    right: 0;
    width: 360px;
    background: rgba(16,16,16,0.97);
    border: 1px solid var(--border-2);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0,0,0,0.7), 0 0 0 1px rgba(255,44,44,0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    transform: translateY(16px) scale(0.96);
    pointer-events: none;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
    transform-origin: bottom right;
}

.chat-widget.open .chat-window {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    background: linear-gradient(135deg, rgba(255,44,44,0.12), rgba(255,100,50,0.06));
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid rgba(255,44,44,0.3);
}

.chat-avatar svg { width: 40px; height: 40px; }

.chat-header-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.chat-header-text strong {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
}

.chat-online {
    font-size: 0.72rem;
    color: #4ade80;
    display: flex;
    align-items: center;
    gap: 5px;
}

.chat-dot {
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulseDot 2s infinite;
}

.chat-x {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-3);
    transition: background 0.2s, color 0.2s;
}

.chat-x:hover { background: rgba(255,255,255,0.07); color: #fff; }
.chat-x svg   { width: 16px; height: 16px; }

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 240px;
    max-height: 320px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-2) transparent;
}

.chat-messages::-webkit-scrollbar       { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 2px; }

.chat-msg {
    display: flex;
    flex-direction: column;
    gap: 2px;
    animation: msgIn 0.3s var(--ease);
    max-width: 84%;
}

@keyframes msgIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.chat-msg.bot  { align-self: flex-start; }
.chat-msg.user { align-self: flex-end; }

.chat-bubble {
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.83rem;
    line-height: 1.55;
    white-space: pre-wrap;
}

.chat-msg.bot  .chat-bubble {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    color: var(--text-1);
    border-bottom-left-radius: 4px;
}

.chat-msg.user .chat-bubble {
    background: var(--red);
    color: #fff;
    border-bottom-right-radius: 4px;
    box-shadow: 0 2px 12px rgba(255,44,44,0.3);
}

.chat-time {
    font-size: 0.62rem;
    color: var(--text-3);
    padding: 0 4px;
}

.chat-msg.user .chat-time { text-align: right; }

.chat-typing {
    align-self: flex-start;
    animation: msgIn 0.3s var(--ease);
}

.chat-typing .chat-bubble {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    padding: 12px 16px;
    display: flex;
    gap: 4px;
    align-items: center;
    border-bottom-left-radius: 4px;
}

.chat-typing span {
    width: 6px;
    height: 6px;
    background: var(--text-3);
    border-radius: 50%;
    animation: typingBounce 1.2s infinite;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30%            { transform: translateY(-5px); opacity: 1; }
}

.chat-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 16px 10px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    min-height: 0;
}

.chat-chips:empty { display: none; }

.chip {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--red-light);
    background: rgba(255,44,44,0.08);
    border: 1px solid rgba(255,44,44,0.25);
    border-radius: 20px;
    padding: 5px 12px;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, transform 0.15s;
    white-space: nowrap;
}

.chip:hover {
    background: rgba(255,44,44,0.18);
    border-color: rgba(255,44,44,0.5);
    transform: translateY(-1px);
}

.chat-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    background: rgba(0,0,0,0.2);
}

#chatInput {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-2);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 0.83rem;
    color: var(--text-1);
    outline: none;
    transition: border-color 0.2s, background 0.2s;
}

#chatInput::placeholder { color: var(--text-3); }

#chatInput:focus {
    border-color: rgba(255,44,44,0.4);
    background: rgba(255,255,255,0.07);
}

.chat-send {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--red);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s, transform 0.15s;
}

.chat-send:hover   { background: var(--red-light); transform: scale(1.05); }
.chat-send:active  { transform: scale(0.95); }
.chat-send svg     { width: 16px; height: 16px; }

@media (max-width: 420px) {
    .chat-widget { bottom: 16px; right: 16px; }
    .chat-window { width: calc(100vw - 32px); right: 0; }
}