:root {
    --ida-green: #1B7A3A;
    --ida-green-dark: #0D4A28;
    --ida-green-light: #2E9B52;
    --ida-gold: #F0C419;
    --ida-gold-dark: #D4A017;
    --ida-red: #C41E3A;
    --ida-black: #1a1a1a;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #333;
    line-height: 1.6;
}

.navbar {
    background: var(--ida-green-dark) !important;
    box-shadow: 0 2px 15px rgba(0,0,0,0.15);
}
.navbar .nav-link {
    font-weight: 500;
    padding: 0.55rem 1rem !important;
    color: rgba(255,255,255,0.9) !important;
}
.navbar .nav-link.active,
.navbar .nav-link:hover {
    color: var(--ida-gold) !important;
}
.navbar-brand img {
    height: 48px;
    width: auto;
}

.hero {
    background: linear-gradient(135deg, var(--ida-green-dark) 0%, var(--ida-green) 50%, #0a3d1f 100%);
    color: #fff;
    padding: 0;
    position: relative;
    overflow: hidden;
    min-height: 480px;
}
.hero-slide {
    min-height: 480px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.hero-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(13,74,40,0.85) 0%, rgba(27,122,58,0.65) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    padding: 5rem 0;
}
.hero h1 {
    font-weight: 800;
    font-size: 2.9rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.hero .lead {
    font-size: 1.25rem;
    opacity: 0.95;
}

.section-title {
    font-weight: 700;
    position: relative;
    margin-bottom: 2rem;
    color: var(--ida-green-dark);
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--ida-gold);
    margin-top: 0.5rem;
    border-radius: 2px;
}

.card-project, .card-event, .card-exec, .card-gallery {
    border: none;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.25s, box-shadow 0.25s;
    height: 100%;
}
.card-project:hover, .card-event:hover, .card-exec:hover, .card-gallery:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 35px rgba(0,0,0,0.14);
}
.card-project img, .card-event img, .card-gallery img {
    height: 210px;
    object-fit: cover;
    width: 100%;
}

.exec-photo {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: 0 4px 18px rgba(0,0,0,0.12);
}

.btn-ida {
    background: var(--ida-green);
    border-color: var(--ida-green);
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
}
.btn-ida:hover {
    background: var(--ida-green-dark);
    border-color: var(--ida-green-dark);
    color: #fff;
}
.btn-gold {
    background: var(--ida-gold);
    border-color: var(--ida-gold);
    color: #1a1a1a;
    font-weight: 700;
    border-radius: 8px;
}
.btn-gold:hover {
    background: var(--ida-gold-dark);
    border-color: var(--ida-gold-dark);
    color: #1a1a1a;
}
.btn-outline-ida {
    border: 2px solid var(--ida-green);
    color: var(--ida-green);
    font-weight: 600;
}
.btn-outline-ida:hover {
    background: var(--ida-green);
    color: #fff;
}

.page-header {
    background: linear-gradient(135deg, var(--ida-green-dark), var(--ida-green));
    color: #fff;
    padding: 3.2rem 0;
}

footer {
    background: var(--ida-green-dark) !important;
}
footer a:hover {
    color: var(--ida-gold) !important;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
}
.gallery-item img {
    transition: transform 0.4s;
}
.gallery-item:hover img {
    transform: scale(1.08);
}

.motto-banner {
    background: linear-gradient(90deg, var(--ida-gold), #f5d76e);
    color: #1a1a1a;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 0.6rem 0;
    text-align: center;
    font-size: 0.95rem;
}

.donation-card {
    border: 2px solid var(--ida-green);
    border-radius: 16px;
    overflow: hidden;
}
.donation-card .card-header {
    background: var(--ida-green);
    color: #fff;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero-content { padding: 3.5rem 0; }
}

.hero-slide::before {
    background: linear-gradient(90deg, rgba(13,74,40, var(--overlay, 0.65)) 0%, rgba(27,122,58, calc(var(--overlay, 0.65) - 0.15)) 100%) !important;
}