:root {
    --primary-blue: #005596;
    --secondary-blue: #003366;
    --accent-blue: #00a0e3;
    --dark-grey: #333333;
    --light-grey: #f4f7f6;
    --white: #ffffff;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', 'Roboto', sans-serif;
    background-color: var(--light-grey);
    color: var(--dark-grey);
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    padding: 0.8rem 0;
}

.navbar-brand img {
    height: 40px;
}

.nav-link {
    color: var(--secondary-blue) !important;
    font-weight: 500;
    margin: 0 10px;
    padding: 5px 0;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-blue);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 80vh;
    background: linear-gradient(rgba(0, 51, 102, 0.6), rgba(0, 51, 102, 0.6)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&q=80&w=1920') no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

/* Cards */
.card-room {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    background: var(--white);
    margin-bottom: 30px;
}

.card-room:hover {
    transform: translateY(-10px);
}

.card-room img {
    height: 250px;
    object-fit: cover;
}

.card-room-body {
    padding: 25px;
}

.btn-detail {
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 25px;
    padding: 8px 25px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-detail:hover {
    background-color: var(--accent-blue);
    color: var(--white);
    box-shadow: 0 5px 15px rgba(0, 160, 227, 0.3);
}

/* Mini Calendar */
.mini-calendar {
    background: var(--white);
    padding: 20px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.calendar-dot {
    height: 6px;
    width: 6px;
    background-color: var(--accent-blue);
    border-radius: 50%;
    display: block;
    margin: 2px auto 0;
}

/* Footer */
footer {
    background-color: var(--secondary-blue);
    color: var(--white);
    padding: 60px 0 20px;
}

footer img {
    height: 50px;
    margin-bottom: 20px;
}

.map-container {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    margin-top: 40px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}