:root {
    --primary-dark: #0f3d4c; 
    --accent: #f26a50;       
    --accent-hover: #e0553a;
    --bg-color: #f7f9fc;
    --card-bg: #ffffff;
}
body { 
    font-family: 'Nunito', sans-serif; 
    background-color: var(--bg-color); 
    color: #333;
}
.fw-extrabold { font-weight: 800; }
.text-primary-dark { color: var(--primary-dark) !important; }
.text-accent { color: var(--accent) !important; }

.btn-accent {
    background-color: var(--accent);
    color: white;
    border: none;
}
.btn-accent:hover {
    background-color: var(--accent-hover);
    color: white;
}
.btn-primary-dark {
    background-color: var(--primary-dark);
    color: white;
}
.btn-primary-dark:hover {
    background-color: #0b2d39;
    color: white;
}
.btn-outline-primary-dark {
    color: var(--primary-dark);
    border: 2px solid var(--primary-dark);
    font-weight: 700;
}
.btn-outline-primary-dark:hover {
    background-color: var(--primary-dark);
    color: white;
}

.hero-section {
    background: linear-gradient(rgba(15, 61, 76, 0.4), rgba(15, 61, 76, 0.6)), 
    url('https://images.unsplash.com/photo-1499793983690-e29da59ef1c2?auto=format&fit=crop&w=1920&q=80') center/cover;
    height: 60vh;
    min-height: 400px;
    color: white;
}
.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}
.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    opacity: 0.9;
}

.filter-wrapper {
    background-color: var(--primary-dark);
    padding: 25px 30px;
    border-radius: 20px;
    margin-top: -60px;
    box-shadow: 0 15px 35px rgba(15, 61, 76, 0.2);
    position: relative;
    z-index: 10;
}
.filter-wrapper .form-control, 
.filter-wrapper .form-select {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    font-weight: 600;
}
.filter-wrapper .form-control::placeholder { color: rgba(255, 255, 255, 0.5); }
.filter-wrapper .form-select option { color: #333; }

.room-card { 
    border-radius: 20px;
    border: none;
    background: var(--card-bg);
    transition: all 0.3s ease; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.04);
}
.room-card:hover { 
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}
.room-card .card-img-top { 
    height: 240px; 
    object-fit: cover; 
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
}
.favorite-icon {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255,255,255,0.8);
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-dark);
    cursor: pointer;
    transition: 0.2s;
}
.favorite-icon:hover { color: var(--accent); transform: scale(1.1);}
.badge-Standard { background-color: #e3f2fd; color: #1976d2; }
.badge-Deluxe { background-color: #fce4ec; color: #c2185b; }
.badge-Homestay { background-color: #e8f5e9; color: #388e3c; }
.room-badge {
    padding: 6px 12px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.8rem;
}
body { background-color: #f8f9fa; }
.hero-section {
    background: linear-gradient(rgba(30, 60, 114, 0.7), rgba(42, 82, 152, 0.7)),
    url('https://images.unsplash.com/photo-1499793983690-e29da59ef1c2?auto=format&fit=crop&w=1920&q=80') center/cover;
    color: white;
    padding: 80px 0;
    text-align: center;
    margin-bottom: -40px; 
}

.filter-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    padding: 20px;
    position: relative;
    z-index: 10;
}

.room-card { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.room-card:hover { 
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15) !important;
}
.card-img-top { height: 220px; object-fit: cover; }
.price-text { color: #e74c3c; font-size: 1.25rem; font-weight: bold; }

.error-message {
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 700;
    margin-top: 4px;
    display: none;
}
.is-invalid {
    border: 2px solid var(--accent) !important;
    background-color: #fff5f3 !important;
}


footer {
    background-color: var(--primary-dark);
}
.transition {
    transition: all 0.3s ease;
}
.hover-accent:hover {
    color: var(--accent) !important;
    transform: translateY(-3px);
}
.hover-white:hover {
    color: #ffffff !important;
    text-decoration: underline !important;
    padding-left: 5px;
}