/* --- Design Tokens --- */
:root {
    --color-primary: #102A43;
    --color-secondary: #E67E22;
    --color-white: #FFFFFF;
    --color-surface: #F4F6F8;
    --color-bg: #FFFFFF;
    --color-text: #102A43;
    --color-text-muted: #4A6282;
    --color-border: #D1D5DB;
    --font-ar: 'IBM Plex Sans Arabic', sans-serif;
    --font-en: 'Manrope', sans-serif;
    --space-xs: 0.5rem; --space-sm: 1rem; --space-md: 1.5rem;
    --space-lg: 2.5rem; --space-xl: 4rem; --space-2xl: 6rem;
    --radius-sm: 2px;
    --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--font-ar); background-color: var(--color-bg);
    color: var(--color-text); line-height: 1.7; -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
body.menu-open { overflow: hidden; }

/* Typography */
h1, h2, h3 { font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); letter-spacing: -0.02em; margin-bottom: var(--space-md); }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); margin-bottom: var(--space-md); }
p { margin-bottom: var(--space-sm); }
p:last-child { margin-bottom: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-md); }
.section-spacing { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }

/* Reusable Components */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    font-family: var(--font-ar); font-weight: 600;
    padding: var(--space-sm) var(--space-lg); border-radius: var(--radius-sm);
    transition: all var(--transition-base); cursor: pointer;
    border: 2px solid transparent; font-size: 1rem;
}
.btn-primary { background: var(--color-secondary); color: var(--color-white); border-color: var(--color-secondary); }
.btn-primary:hover { background: #cf6e1c; transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); transform: translateY(-1px); }
.btn-whatsapp { background: #25D366; color: var(--color-white); border-color: #25D366; }
.btn-whatsapp:hover { background: #20bd5a; transform: translateY(-1px); }

.btn:focus-visible, a:focus-visible, button:focus-visible { outline: 2px solid var(--color-secondary); outline-offset: 2px; }
.btn-group { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

/* --- Header --- */
header { position: sticky; top: 0; background: var(--color-white); z-index: 100; border-bottom: 1px solid var(--color-border); transition: box-shadow 0.3s ease; }
header.scrolled { box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo-group { display: flex; align-items: center; gap: 8px; }
.logo-img { height: 40px; width: auto; }
nav.desktop-nav { display: none; }
nav.desktop-nav a { font-weight: 500; padding: 8px 12px; transition: color var(--transition-base); font-size: 0.95rem; }
nav.desktop-nav a:hover { color: var(--color-secondary); }

.header-cta { display: none; }
.mobile-actions { display: flex; align-items: center; gap: var(--space-sm); }
.menu-btn { background: none; border: none; cursor: pointer; padding: 8px; display: flex; align-items: center; }
.phone-link { color: var(--color-primary); display: flex; align-items: center; transition: color var(--transition-base); }
.phone-link:hover { color: var(--color-secondary); }

@media (min-width: 1024px) {
    nav.desktop-nav { display: flex; gap: var(--space-xs); }
    .header-cta { display: inline-flex; }
    .mobile-actions { display: none; }
}

/* --- Mobile Drawer --- */
.mobile-overlay { position: fixed; inset: 0; background: rgba(16, 42, 67, 0.4); z-index: 150; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; }
.mobile-overlay.is-open { opacity: 1; visibility: visible; }
.mobile-drawer { position: fixed; top: 0; bottom: 0; right: 0; width: 85%; max-width: 320px; background: var(--color-white); z-index: 200; transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1); display: flex; flex-direction: column; box-shadow: -5px 0 25px rgba(0,0,0,0.1); }
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-header { display: flex; justify-content: space-between; align-items: center; padding: var(--space-md) var(--space-lg); border-bottom: 1px solid var(--color-border); }
.close-btn { background: none; border: none; cursor: pointer; padding: 4px; color: var(--color-primary); display: flex; }
.drawer-nav { flex: 1; padding: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-sm); }
.drawer-nav a { font-size: 1.4rem; font-weight: 600; color: var(--color-primary); padding: var(--space-xs) 0; border-bottom: 1px solid var(--color-surface); transition: color var(--transition-base); }
.drawer-nav a:hover { color: var(--color-secondary); }
.drawer-footer { padding: var(--space-lg); border-top: 1px solid var(--color-border); margin-top: auto; }
.drawer-footer .btn { width: 100%; margin-bottom: var(--space-sm); justify-content: center; }

/* --- Hero --- */
.hero { padding-top: var(--space-xl); padding-bottom: 0; }
.hero-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); align-items: end; padding-bottom: var(--space-xl); }
.hero-image-container { order: -1; position: relative; overflow: hidden; }
.hero-image-container img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.hero-caption { font-size: 0.8rem; color: var(--color-text-muted); margin-top: var(--space-xs); font-family: var(--font-en); letter-spacing: 1px; text-transform: uppercase; }

@media (min-width: 768px) {
    .hero-grid { grid-template-columns: 1fr 1.2fr; gap: var(--space-xl); }
    .hero-image-container { order: 0; height: 500px; }
}

/* --- Trust Bar --- */
.trust-bar { border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); padding: var(--space-lg) 0; }
.metrics-editorial { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--space-lg); text-align: center; }
.metric-item { flex: 1 1 45%; }
.metric-value { font-family: var(--font-en); font-weight: 800; font-size: 2.5rem; color: var(--color-primary); line-height: 1; }
.metric-label { font-size: 0.9rem; color: var(--color-text-muted); margin-top: 4px; }
@media (min-width: 768px) { .metric-item { flex: 1 1 20%; } }

/* --- Context Section --- */
.context-section { border-bottom: 1px solid var(--color-border); }
.context-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-xl); }
.context-list { list-style: none; display: grid; gap: var(--space-sm); margin-bottom: var(--space-lg); }
.context-list li { display: flex; align-items: center; gap: var(--space-sm); font-size: 1.1rem; font-weight: 500; }
.context-list li::before { content: ''; width: 8px; height: 8px; background: var(--color-secondary); flex-shrink: 0; border-radius: 50%; }
@media (min-width: 768px) { .context-grid { grid-template-columns: 1.5fr 1fr; } }

/* --- Services --- */
.services-layout { display: grid; grid-template-columns: 1fr; gap: var(--space-xl); }
.service-group-title { font-size: 0.8rem; font-family: var(--font-en); font-weight: 800; text-transform: uppercase; letter-spacing: 2px; color: var(--color-secondary); margin-bottom: var(--space-md); display: block; }
.service-list { list-style: none; }
.service-list li { border-bottom: 1px solid var(--color-border); }
.service-list a { display: flex; justify-content: space-between; align-items: center; padding: var(--space-md) 0; font-size: 1.4rem; font-weight: 600; transition: color var(--transition-base), padding-right var(--transition-base); }
.service-list a:hover { color: var(--color-secondary); padding-right: 8px; }
.service-list a:hover .arrow { transform: translateX(-6px); color: var(--color-secondary); }
.arrow { font-family: var(--font-en); transition: transform var(--transition-base), color var(--transition-base); color: var(--color-text-muted); }
@media (min-width: 768px) { .services-layout { grid-template-columns: 1fr 1fr; } }

/* --- Projects Gallery --- */
.projects-grid { display: grid; gap: var(--space-sm); }
.project-img-wrap { overflow: hidden; position: relative; background: var(--color-surface); }
.project-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.project-img-wrap:hover img { transform: scale(1.03); }
.project-label { position: absolute; bottom: 0; right: 0; background: var(--color-primary); color: var(--color-white); padding: 4px 12px; font-size: 0.8rem; font-weight: 600; }
@media (min-width: 768px) {
    .projects-grid { grid-template-columns: 2fr 1fr; grid-template-rows: 300px 200px; }
    .p-main { grid-column: 1; grid-row: 1 / 3; }
    .p-side-1 { grid-column: 2; grid-row: 1; }
    .p-side-2 { grid-column: 2; grid-row: 2; }
}

/* --- Warranty & Experience --- */
.warranty-section { text-align: center; background: var(--color-surface); }
.warranty-number { font-family: var(--font-en); font-size: clamp(5rem, 12vw, 8rem); font-weight: 800; color: var(--color-primary); line-height: 1; }
.warranty-subtitle { font-size: 1.5rem; font-weight: 700; margin-top: var(--space-xs); }

/* --- Pricing --- */
.pricing-list { max-width: 600px; margin: 0 auto; }
.price-row { display: flex; justify-content: space-between; padding: var(--space-sm) 0; border-bottom: 1px solid var(--color-border); font-size: 1.05rem; }
.price-val { font-family: var(--font-en); font-weight: 700; color: var(--color-primary); }
.price-note { font-size: 0.85rem; color: var(--color-text-muted); margin-top: var(--space-md); text-align: center; max-width: 500px; margin-left: auto; margin-right: auto; }

/* --- Location --- */
.location-section { text-align: center; }
.cities-display { display: flex; justify-content: center; gap: var(--space-md); margin-top: var(--space-md); font-weight: 700; font-size: 1.5rem; color: var(--color-primary); }

/* --- Steps --- */
.steps-grid { display: grid; gap: var(--space-lg); max-width: 800px; margin: 0 auto; }
.step-item { display: flex; gap: var(--space-md); align-items: flex-start; }
.step-num { font-family: var(--font-en); font-size: 2.5rem; font-weight: 800; color: var(--color-surface); -webkit-text-stroke: 1px var(--color-primary); line-height: 1; transition: -webkit-text-stroke var(--transition-base); }
.step-item:hover .step-num { -webkit-text-stroke: 1px var(--color-secondary); }
.step-content h3 { font-size: 1.2rem; margin-bottom: 4px; }
.step-content p { color: var(--color-text-muted); font-size: 0.95rem; }

/* --- Footer --- */
footer { background: var(--color-primary); color: var(--color-white); padding: var(--space-2xl) 0 var(--space-lg); font-size: 0.9rem; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-xl); }
.footer-link-title { font-weight: 700; margin-bottom: var(--space-sm); color: var(--color-secondary); font-size: 1rem; }
footer a { color: rgba(255,255,255,0.8); display: block; margin-bottom: 8px; transition: color var(--transition-base); }
footer a:hover { color: var(--color-white); }
.copyright { margin-top: var(--space-xl); padding-top: var(--space-md); border-top: 1px solid rgba(255,255,255,0.1); text-align: center; color: rgba(255,255,255,0.5); font-family: var(--font-en); }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }

/* --- FAB --- */
.whatsapp-fab { position: fixed; bottom: 20px; left: 20px; background: #25D366; color: white; width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(0,0,0,0.15); z-index: 99; transition: transform 0.2s ease; }
.whatsapp-fab:hover { transform: scale(1.05); }
@media (min-width: 1024px) { .whatsapp-fab { display: none; } }

/* --- Reveal Animation --- */
.reveal { opacity: 0; transform: translateY(15px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
    .reveal { opacity: 1; transform: none; }
    .btn:hover, .hero-image-container:hover img, .project-img-wrap:hover img { transform: none; }
}