/* ==========================================================================
   MAJHAIL CONSTRUCTIONS — SHARED STYLESHEET
   White & Blue professional colour scheme
   ========================================================================== */

/* ==========================================================================
   01. CSS VARIABLES & TYPOGRAPHY
   ========================================================================== */
:root {
    /* White & Blue Colour Scheme */
    --color-bg:           #ffffff;
    --color-surface:      #f5f8ff;
    --color-text-main:    #0a1628;
    --color-text-muted:   #4a5568;
    --color-text-light:   #ffffff;
    --color-accent:       #1e4fd8;         /* primary blue */
    --color-accent-light: #3b6ef5;         /* lighter blue */
    --color-accent-dark:  #0f2d8a;         /* darker blue */
    --color-border:       #d1daf0;
    --color-curtain:      #e8eeff;

    /* Typography */
    --font-head: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Urbanist', sans-serif;

    /* Spacing */
    --space-xs: clamp(15px, 2vw, 20px);
    --space-sm: clamp(30px, 4vw, 40px);
    --space-md: clamp(60px, 8vw, 100px);
    --space-lg: clamp(80px, 12vw, 140px);

    /* Layout */
    --nav-height:    clamp(70px, 9vh, 100px);
    --edge-padding:  clamp(24px, 5vw, 80px);
    --grid-gap:      clamp(30px, 5vw, 80px);

    /* Easing */
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
}

/* ==========================================================================
   02. RESET & GLOBAL
   ========================================================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: auto; }
body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 { font-family: var(--font-head); font-weight: 600; line-height: 1.1; }
p, span, li, a { font-family: var(--font-body); font-weight: 400; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

.container { width: 100%; max-width: 1920px; margin: 0 auto; padding: 0 var(--edge-padding); }
.section-pad { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }

/* ==========================================================================
   03. ANIMATION SYSTEM
   ========================================================================== */
.reveal-up {
    opacity: 0; transform: translateY(30px);
    transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo);
    will-change: opacity, transform;
}
.reveal-up.is-visible { opacity: 1; transform: translateY(0); }

.text-reveal {
    clip-path: polygon(0 120%, 100% 120%, 100% 120%, 0 120%);
    transform: translateY(15px); opacity: 0;
    transition: clip-path 1.2s var(--ease-out-expo), transform 1.2s var(--ease-out-expo), opacity 0.8s ease;
    will-change: clip-path, transform;
}
.text-reveal.is-visible { clip-path: polygon(0 -20%, 100% -20%, 100% 120%, 0 120%); transform: translateY(0); opacity: 1; }

.reveal-curtain { position: relative; overflow: hidden; }
.reveal-curtain::after {
    content: ''; position: absolute; inset: 0;
    background-color: var(--color-curtain);
    transform-origin: right; transition: transform 1.2s var(--ease-out-expo); z-index: 2;
}
.reveal-curtain.is-visible::after { transform: scaleX(0); }

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ==========================================================================
   04. BUTTON SYSTEM
   ========================================================================== */
.btn-solid {
    display: inline-flex; align-items: center; justify-content: center;
    background-color: var(--color-accent); color: var(--color-text-light);
    font-family: var(--font-head); font-weight: 700; text-transform: uppercase;
    border-radius: 50px; position: relative; overflow: hidden;
    transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s ease, border-color 0.4s ease, color 0.4s ease;
    border: 2px solid var(--color-accent); cursor: pointer; text-decoration: none; z-index: 1;
}
.btn-solid::before {
    content: ''; position: absolute; top: 100%; left: 50%; width: 120%; aspect-ratio: 1;
    background-color: var(--color-accent-dark); border-radius: 50%;
    transform: translate(-50%, 0) scale(0);
    transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1); z-index: -1;
}
.btn-solid span, .btn-solid svg, .btn-solid i { position: relative; z-index: 2; transition: color 0.4s ease; }
.btn-solid i { font-style: normal; margin-left: 10px; font-size: 1.1em; transition: transform 0.3s ease; }
.btn-solid:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(30, 79, 216, 0.35); color: #fff; }
.btn-solid:hover::before { transform: translate(-50%, -50%) scale(2); }
.btn-solid:hover i { transform: translateX(4px); }

.btn-xs  { padding: 8px 18px;  font-size: 0.78rem; letter-spacing: 0.8px; }
.btn-sm  { padding: 10px 22px; font-size: 0.82rem; letter-spacing: 1px; }
.btn-md  { padding: 14px 32px; font-size: 0.92rem; letter-spacing: 1.5px; }
.btn-lg  { padding: 22px 56px; font-size: 1.05rem; letter-spacing: 2px; }

/* ==========================================================================
   05. NAVIGATION  (no mix-blend-mode, consistent dark/light states)
   ========================================================================== */
.site-nav {
    position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height);
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 var(--edge-padding); z-index: 1000;
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease,
                transform 0.6s var(--ease-out-expo), opacity 0.4s ease;
}

/* Brand */
.nav-brand a { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-brand img { height: clamp(22px, 2.5vw, 32px); width: auto; transition: filter 0.4s ease; }
.brand-text {
    font-family: var(--font-head); font-weight: 800;
    font-size: clamp(1.1rem, 1.8vw, 1.3rem); letter-spacing: 2px;
    transition: color 0.4s ease;
}

/* Right container */
.nav-right-container { display: flex; align-items: center; gap: clamp(24px, 3vw, 44px); }
.nav-menu { display: flex; gap: 26px; list-style: none; }
.mobile-toggle {
    display: none; background: none; border: none;
    font-size: 1.5rem; cursor: pointer; z-index: 1001;
    transition: color 0.4s ease;
}
.mobile-only-contact { display: none; }

.nav-link {
    font-family: var(--font-head); font-size: 0.9rem; font-weight: 600;
    letter-spacing: 1px; text-transform: uppercase;
    position: relative; padding: 5px 0; overflow: hidden;
    display: inline-block; transition: color 0.4s ease;
}
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 100%; height: 1.5px; background-color: currentColor;
    transform: translateX(-101%);
    transition: transform 0.4s var(--ease-out-expo);
}
.nav-link:hover::after { transform: translateX(0); }

/* === NAV OVER HERO (transparent) — BLACK text === */
.site-nav:not(.is-scrolled) {
    background-color: transparent;
}
.site-nav:not(.is-scrolled) .brand-text,
.site-nav:not(.is-scrolled) .nav-link,
.site-nav:not(.is-scrolled) .mobile-toggle {
    color: var(--color-text-main);
}
.site-nav:not(.is-scrolled) .nav-brand img { filter: brightness(0); }

/* Contact button over hero — Solid Blue */
.site-nav:not(.is-scrolled) .btn-solid {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: #ffffff;
}
.site-nav:not(.is-scrolled) .btn-solid:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: #ffffff;
}
.site-nav:not(.is-scrolled) .btn-solid::before { background-color: var(--color-accent-dark); }

/* === SCROLLED STATE (light/white bg) — dark text === */
.site-nav.is-scrolled {
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    /* Removed box-shadow to blend with site */
}
.site-nav.is-scrolled .brand-text  { color: var(--color-text-main); }
.site-nav.is-scrolled .nav-brand img { filter: brightness(0); }
.site-nav.is-scrolled .nav-link   { color: var(--color-text-main); }
.site-nav.is-scrolled .mobile-toggle { color: var(--color-text-main); }

/* Contact button scrolled */
.site-nav.is-scrolled .btn-solid {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: #ffffff;
}
.site-nav.is-scrolled .btn-solid::before { background-color: var(--color-accent-dark); }

/* Hidden state */
.site-nav.is-hidden { opacity: 0; pointer-events: none; transform: translateY(-20px); }

/* === PAGE SPECIFIC OVERRIDES === */

/* 1. About Us — White menu links at the top */
.about-page .site-nav:not(.is-scrolled) .nav-link,
.about-page .site-nav:not(.is-scrolled) .mobile-toggle {
    color: #ffffff;
}

/* 2. Contact Page — Remove header line separator */
.contact-page .site-nav.is-scrolled {
    box-shadow: none; border-bottom: none;
}

/* 3. Services Page — White logo/brand, Black links at the top */
.services-page .site-nav:not(.is-scrolled) .brand-text {
    color: #ffffff;
}
.services-page .site-nav:not(.is-scrolled) .nav-brand img {
    filter: brightness(0) invert(1);
}
.services-page .site-nav:not(.is-scrolled) .nav-link,
.services-page .site-nav:not(.is-scrolled) .mobile-toggle {
    color: var(--color-text-main);
}

/* Mobile menu — always dark text inside the slide-out panel */
@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    .nav-action { display: none; }
    .mobile-only-contact { display: block; }

    .nav-menu {
        position: fixed; top: 0; right: -100%; width: 72%; height: 100vh;
        background-color: #ffffff;
        flex-direction: column; justify-content: center; align-items: center;
        gap: 36px; transition: right 0.6s var(--ease-out-expo);
        box-shadow: -10px 0 40px rgba(0,0,0,0.08); z-index: 1000;
    }
    .nav-menu.is-active { right: 0; }

    /* Always dark text in the mobile menu regardless of hero state */
    .nav-menu .nav-link { color: var(--color-text-main) !important; }
    .nav-menu .nav-link::after { background-color: var(--color-accent) !important; }
}

/* ==========================================================================
   06. TYPOGRAPHY SCALE
   ========================================================================== */
.section-title { font-size: clamp(2.2rem, 3.1vw, 3.6rem); letter-spacing: -1px; }
.section-desc  {
    font-size: clamp(1rem, 1.35vw, 1.15rem);
    color: var(--color-text-muted); line-height: 1.6;
    max-width: 800px; margin-top: 20px;
}

/* ==========================================================================
   07. FOOTER — white background
   ========================================================================== */
.site-footer {
    background-color: #ffffff;
    color: var(--color-text-main);
    padding-top: var(--space-lg); padding-bottom: 40px;
    overflow: hidden; position: relative; z-index: 20;
    border-top: 1px solid var(--color-border);
}
.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: clamp(40px, 5vw, 60px);
    margin-bottom: var(--space-md);
}
.footer-brand h3 {
    font-family: var(--font-head); font-size: clamp(1.4rem, 2vw, 1.8rem);
    margin-bottom: 16px; letter-spacing: 2px; font-weight: 800;
    color: var(--color-text-main);
}
.footer-brand p {
    font-size: clamp(0.95rem, 1.1vw, 1rem);
    color: var(--color-text-muted); max-width: 340px; line-height: 1.8;
}
.footer-col h4 {
    font-family: var(--font-head); font-size: 0.85rem;
    margin-bottom: 20px; color: var(--color-accent);
    font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px;
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
    font-size: clamp(0.95rem, 1.1vw, 1rem);
    color: var(--color-text-muted); transition: color 0.3s ease;
}
.footer-links a:hover { color: var(--color-accent); }
.footer-contact p { margin-bottom: 12px; font-size: clamp(0.95rem, 1.1vw, 1rem); color: var(--color-text-muted); }

.footer-massive-text {
    font-family: var(--font-head); font-size: 16vw; font-weight: 800;
    color: var(--color-accent); text-align: center;
    line-height: 0.8; letter-spacing: -4px; margin: var(--space-md) 0;
    opacity: 0.05; pointer-events: none; user-select: none;
}
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 32px; border-top: 1px solid var(--color-border);
    font-size: 0.88rem; color: var(--color-text-muted);
}
.footer-bottom a { color: inherit; transition: color 0.3s ease; }
.footer-bottom a:hover { color: var(--color-accent); }
.credits a { text-decoration: underline; text-underline-offset: 4px; font-weight: 600; }

/* Footer responsive */
@media (max-width: 1200px) {
    .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .footer-top { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}