/* ===========================
   CSS Custom Properties
   =========================== */
:root {
    --eco-green: #2d6a4f;
    --eco-green-dark: #1b4332;
    --eco-green-light: #40916c;
    --eco-orange: #e76f51;
    --eco-orange-dark: #c4563b;
    --eco-dark: #1a3a2a;
    --eco-light: #f8faf9;
}

/* ===========================
   Global
   =========================== */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 76px;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #333;
}

/* ===========================
   Bootstrap overrides
   =========================== */
.btn-primary {
    background-color: var(--eco-green);
    border-color: var(--eco-green);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--eco-green-dark);
    border-color: var(--eco-green-dark);
}

.btn-outline-light:hover {
    color: var(--eco-green);
}

.text-primary {
    color: var(--eco-green) !important;
}

.bg-primary {
    background-color: var(--eco-green) !important;
}

.btn-success {
    background-color: var(--eco-green);
    border-color: var(--eco-green);
}

.btn-success:hover {
    background-color: var(--eco-green-dark);
    border-color: var(--eco-green-dark);
}

/* ===========================
   Navbar
   =========================== */
#mainNav {
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    padding: 1rem 0;
}

#mainNav.scrolled {
    background-color: #fff !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 0.5rem 0;
}

#mainNav.scrolled .nav-link {
    color: #333 !important;
}

#mainNav.scrolled .nav-link:hover,
#mainNav.scrolled .nav-link.active {
    color: var(--eco-green) !important;
}

#mainNav.scrolled .logo-light {
    display: none !important;
}

#mainNav.scrolled .logo-dark {
    display: inline-block !important;
}

#mainNav.scrolled .navbar-toggler {
    border-color: #333;
}

#mainNav.scrolled .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(51,51,51,0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.nav-link {
    font-weight: 500;
    transition: color 0.2s;
}

.lang-switch .badge {
    font-size: 0.75rem;
    padding: 0.4em 0.6em;
    cursor: pointer;
    transition: all 0.2s;
}

.lang-switch .badge:hover {
    background-color: var(--eco-green) !important;
    color: #fff !important;
}

/* ===========================
   Hero
   =========================== */
.hero-section {
    min-height: 100vh;
    background: url('../img/hero.jpg') center center / cover no-repeat;
    position: relative;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(27, 67, 50, 0.85) 0%, rgba(45, 106, 79, 0.7) 100%);
}

/* ===========================
   Section titles
   =========================== */
.section-title {
    font-weight: 700;
    color: var(--eco-dark);
    position: relative;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================
   Stats
   =========================== */
.stat-number {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
}

.stat-suffix {
    font-size: 2rem;
    font-weight: 700;
}

.stat-label {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
}

/* ===========================
   Service Cards
   =========================== */
.service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 12px;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
}

.service-icon i {
    font-size: 2.5rem;
}

/* ===========================
   Equipment
   =========================== */
.spec-card {
    transition: transform 0.3s ease;
    height: 100%;
}

.spec-card:hover {
    transform: translateY(-3px);
}

.feature-card {
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
}

/* ===========================
   Projects
   =========================== */
.project-card {
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
}

.project-img-wrapper {
    height: 220px;
    overflow: hidden;
}

.project-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-img-wrapper img {
    transform: scale(1.05);
}

/* ===========================
   Contact
   =========================== */
.form-control:focus {
    border-color: var(--eco-green);
    box-shadow: 0 0 0 0.2rem rgba(45, 106, 79, 0.25);
}

.form-check-input:checked {
    background-color: var(--eco-green);
    border-color: var(--eco-green);
}

/* ===========================
   Footer
   =========================== */
.footer a:hover {
    color: var(--eco-green-light) !important;
}

/* ===========================
   Animations
   =========================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===========================
   Responsive
   =========================== */
@media (max-width: 991.98px) {
    #mainNav {
        background-color: rgba(27, 67, 50, 0.95) !important;
    }

    #mainNav.scrolled {
        background-color: #fff !important;
    }

    .hero-section {
        min-height: 80vh;
    }

    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 575.98px) {
    .hero-section h1 {
        font-size: 1.8rem;
    }

    .hero-section .lead {
        font-size: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }
}