/* ===== SNJ Civil Works — base styles ===== */

:root {
    --navy: #13263b;
    --navy-light: #1e3a56;
    --amber: #e8821c;
    --amber-dark: #c86a0f;
    --concrete: #f4f5f7;
    --concrete-dark: #e4e6ea;
    --ink: #1f2933;
    --ink-light: #52606d;
    --white: #ffffff;
    --whatsapp: #25d366;
    --radius: 6px;
    --max-width: 1180px;
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--ink);
    background: var(--white);
    line-height: 1.6;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--navy);
    line-height: 1.25;
}

a { text-decoration: none; color: inherit; transition: color 0.2s ease, transform 0.2s ease, background-color 0.2s ease; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
    border: none;
    cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.97); }
.btn-primary { background: var(--amber); color: var(--white); }
.btn-primary:hover { background: var(--amber-dark); box-shadow: 0 10px 22px rgba(232,130,28,0.35); }
.btn-outline { background: transparent; border: 2px solid var(--white); color: var(--white); }
.btn-outline:hover { background: var(--white); color: var(--navy); }
.btn-outline-dark { background: transparent; border: 2px solid var(--navy); color: var(--navy); }
.btn-outline-dark:hover { background: var(--navy); color: var(--white); }
.btn-whatsapp {
    background: var(--whatsapp);
    color: var(--white);
    padding: 10px 20px;
    font-size: 0.9rem;
    position: relative;
}
.btn-whatsapp:hover { background: #1fb855; box-shadow: 0 10px 22px rgba(37,211,102,0.35); }
.header-actions .btn-whatsapp { animation: pulse-ring 2.4s ease-out infinite; }
.header-actions .btn-whatsapp:hover { animation: none; }

@keyframes pulse-ring {
    0% { box-shadow: 0 0 0 0 rgba(37,211,102,0.45); }
    70% { box-shadow: 0 0 0 10px rgba(37,211,102,0); }
    100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}

/* ===== Header ===== */
.site-header {
    background: var(--navy);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    gap: 24px;
}
.logo {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-family: var(--font-heading);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}
.header-inner .logo:hover { transform: scale(1.03); }
.logo-mark {
    background: var(--amber);
    color: var(--white);
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 1.1rem;
    transition: background 0.2s ease;
}
.logo-text { color: var(--white); font-weight: 600; font-size: 1.05rem; }
.logo-img { height: 38px; width: auto; }

.main-nav {
    display: flex;
    gap: 26px;
    flex-wrap: wrap;
    margin-left: auto;
}
.main-nav a {
    position: relative;
    color: #c6cfd8;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 6px 2px;
    transition: color 0.2s ease;
}
.main-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--amber);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
}
.main-nav a:hover, .main-nav a.active { color: var(--white); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 16px; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: background 0.2s ease, transform 0.2s ease; }
.nav-toggle:hover span { background: var(--amber); }

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    background-size: cover;
    background-position: center;
    color: var(--white);
    padding: 90px 0 70px;
    position: relative;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(19,38,59,0.88) 0%, rgba(30,58,86,0.82) 100%);
}
.hero .container { position: relative; z-index: 1; }
.hero-inner { max-width: 640px; }
.hero-inner > * { opacity: 0; animation: fadeUp 0.6s ease forwards; }
.hero-inner .eyebrow { animation-delay: 0.05s; }
.hero-inner h1 { animation-delay: 0.15s; }
.hero-inner p { animation-delay: 0.25s; }
.hero-inner .hero-actions { animation-delay: 0.35s; }

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

.hero .eyebrow {
    display: inline-block;
    color: var(--amber);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.8rem;
    margin-bottom: 14px;
}
.hero h1 { font-size: 2.6rem; color: var(--white); margin-bottom: 18px; }
.hero p { color: #cfd8e0; font-size: 1.1rem; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.page-hero {
    background: var(--navy);
    background-size: cover;
    background-position: center;
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    position: relative;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(19,38,59,0.85) 0%, rgba(30,58,86,0.8) 100%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: var(--white); margin-bottom: 10px; }
.page-hero p { color: #cfd8e0; }

/* ===== Sections ===== */
section { padding: 70px 0; }
.section-alt { background: var(--concrete); }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 44px; }
.section-head .eyebrow {
    color: var(--amber);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.8rem;
    display: block;
    margin-bottom: 10px;
}
.section-head h2 { font-size: 2rem; margin-bottom: 12px; }
.section-head p { color: var(--ink-light); }

/* ===== Grids & Cards ===== */
.grid {
    display: grid;
    gap: 28px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
    background: var(--white);
    border: 1px solid var(--concrete-dark);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}
.card:hover { box-shadow: 0 16px 34px rgba(19,38,59,0.14); transform: translateY(-5px); border-color: transparent; }
.card-body { padding: 22px; }
.card-body h3 { font-size: 1.15rem; margin-bottom: 8px; transition: color 0.2s ease; }
.card:hover .card-body h3 { color: var(--amber-dark); }
.card-body p { color: var(--ink-light); font-size: 0.95rem; }
.card-tag {
    display: inline-block;
    background: var(--concrete);
    color: var(--navy);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 10px;
    transition: background 0.2s ease, color 0.2s ease;
}
.card:hover .card-tag { background: var(--amber); color: var(--white); }
.card-meta { font-size: 0.85rem; color: var(--ink-light); margin-top: 10px; }

/* ===== Placeholder images ===== */
.placeholder-img {
    background: repeating-linear-gradient(45deg, var(--concrete-dark), var(--concrete-dark) 10px, var(--concrete) 10px, var(--concrete) 20px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink-light);
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    position: relative;
    transition: transform 0.4s ease;
}
.card:hover .placeholder-img { transform: scale(1.06); }
.placeholder-img span {
    background: rgba(255,255,255,0.85);
    padding: 6px 14px;
    border-radius: 4px;
    transition: background 0.2s ease;
}
.ratio-4-3 { aspect-ratio: 4 / 3; }
.ratio-16-9 { aspect-ratio: 16 / 9; }
.ratio-1-1 { aspect-ratio: 1 / 1; }

/* ===== Filters (portfolio) ===== */
.filter-bar { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.filter-bar a {
    padding: 8px 18px;
    border-radius: 999px;
    border: 1px solid var(--concrete-dark);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--ink-light);
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.filter-bar a.active, .filter-bar a:hover { background: var(--navy); color: var(--white); border-color: var(--navy); transform: translateY(-2px); }

/* ===== Stats strip ===== */
.stats-strip { background: var(--navy); color: var(--white); padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; gap: 20px; }
.stats-grid strong { display: block; font-size: 2.2rem; color: var(--amber); font-family: var(--font-heading); }
.stats-grid span { color: #cfd8e0; font-size: 0.9rem; }

/* ===== Forms ===== */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.9rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--concrete-dark);
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--amber);
    box-shadow: 0 0 0 3px rgba(232,130,28,0.15);
}
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: flex-start; }
.contact-info-card {
    background: var(--navy);
    color: var(--white);
    border-radius: var(--radius);
    padding: 32px;
}
.contact-info-card h3 { color: var(--white); margin-bottom: 18px; }
.contact-info-card a, .contact-info-card p { color: #cfd8e0; display: block; margin-bottom: 14px; }

.alert { padding: 14px 18px; border-radius: var(--radius); margin-bottom: 24px; font-weight: 500; }
.alert-success { background: #e4f6ec; color: #1a7a43; border: 1px solid #b7e6c9; }
.alert-error { background: #fdeceb; color: #b3261e; border: 1px solid #f6c4c0; }

/* ===== Footer ===== */
.site-footer { background: var(--navy); color: #cfd8e0; padding-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-col h4 { color: var(--white); margin-bottom: 16px; font-size: 1rem; }
.footer-col a, .footer-col span { display: block; color: #a9b4bf; margin-bottom: 10px; font-size: 0.92rem; transition: color 0.2s ease, transform 0.2s ease; }
.footer-col a:hover { color: var(--amber); transform: translateX(4px); }
.footer-tagline { margin: 10px 0 18px; color: #a9b4bf; }
.social-links { display: flex; gap: 10px; }
.social-links a {
    width: 34px; height: 34px;
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    background: var(--navy-light);
    border-radius: 50%;
    color: var(--white);
    transition: background 0.2s ease, transform 0.2s ease;
}
.social-links a svg { flex-shrink: 0; }
.social-links a:hover { background: var(--amber); transform: translateY(-3px) rotate(6deg); }
.footer-bottom {
    border-top: 1px solid var(--navy-light);
    padding: 18px 0;
    text-align: center;
    font-size: 0.85rem;
    color: #8c98a4;
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}

@media (max-width: 760px) {
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--navy);
        flex-direction: column;
        padding: 10px 24px 20px;
        gap: 14px;
        display: none;
    }
    .main-nav.open { display: flex; }
    .nav-toggle { display: flex; }
    .header-actions .btn-whatsapp { display: none; }
    .hero h1 { font-size: 2rem; }
    .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
    .section-head h2 { font-size: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}