/*
- Resort background image.
- Frosted glass effect for cards using backdrop-filter.
- Tropical color palette (sky blue, sandy beige).
*/

@layer base, components;

@layer base {
    :root {
        /* Tropical Resort Theme */
        --primary-color: oklch(60% 0.15 220);      /* Sky Blue */
        --accent-color: oklch(85% 0.1 80);        /* Sandy Beige */
        --background-color: oklch(98% 0.01 220);   /* Very light blue */
        --text-color: oklch(20% 0.02 220);         /* Dark Blue */
        --card-background: oklch(98% 0.01 220 / 60%); /* Translucent light blue */
        --shadow-color: oklch(20% 0.03 220);        /* Muted blue shadow */
        --glow-color: oklch(85% 0.1 80 / 70%);    /* Sandy Beige glow */
    }

    body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        background-image: url('https://paxahere.com/1920/1080/?beach,resort,tropical');
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
        color: var(--text-color);
        margin: 0;
    }

    h1, h2, h3, h4, h5, h6 {
        font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
        font-weight: 600;
    }
}

@layer components {
    header {
        background-color: var(--card-background);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        color: var(--text-color);
        padding: 1.5rem 1rem;
        text-align: center;
        border-bottom: 2px solid oklch(from var(--primary-color) l a / 50%);
    }

    h1 {
        font-size: clamp(2rem, 5vw, 3.5rem);
        color: var(--primary-color);
        text-shadow: 1px 1px 5px oklch(from var(--shadow-color) l a / 30%);
    }

    main {
        padding: 2rem;
        max-width: 1200px;
        margin: auto;
    }

    #itinerary-form, itinerary-card, .hotels-card {
        background: var(--card-background);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-radius: 12px;
        box-shadow: 
            0 1px 3px 0 oklch(from var(--shadow-color) l a / 20%),
            0 5px 15px 0 oklch(from var(--shadow-color) l a / 15%),
            0 20px 40px -10px oklch(from var(--shadow-color) l a / 10%);
        border: 1px solid oklch(100% 0 0 / 20%); /* Faint white border */
    }

    #itinerary-form {
        display: flex;
        flex-wrap: wrap;
        gap: 1.5rem;
        margin-bottom: 3rem;
        padding: 2rem;
    }

    #itinerary-form input, #itinerary-form button {
        padding: 1rem;
        border-radius: 6px;
        font-size: 1rem;
        border: 1px solid transparent;
    }

    #itinerary-form input {
        flex-grow: 1;
        background-color: oklch(100% 0 0 / 50%);
        color: var(--text-color);
    }

    #itinerary-form input:focus {
        outline: 2px solid var(--accent-color);
    }

    #itinerary-form button {
        background-color: var(--accent-color);
        color: var(--text-color);
        font-weight: bold;
        cursor: pointer;
        transition: transform 0.2s ease, box-shadow 0.3s ease-in-out;
    }

    #itinerary-form button:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 25px var(--glow-color), 0 5px 15px oklch(from var(--shadow-color) l a / 20%);
    }

    #itinerary-results {
        display: grid;
        gap: 2.5rem;
    }
    
    itinerary-card, .hotels-card {
        container-type: inline-size;
        overflow: hidden;
    }

    .hotels-card {
        padding: 1.5rem;
    }

    .hotels-card h2 {
        color: var(--primary-color);
        border-bottom: 3px solid var(--accent-color);
        padding-bottom: 0.5rem;
    }

    .hotels-card ul {
        list-style: none;
        padding: 0;
        margin: 1rem 0 0;
    }

    .hotels-card li {
        padding: 0.75rem 0.5rem;
        border-radius: 4px;
        transition: background-color 0.2s;
    }

    .hotels-card li:nth-child(odd) {
        background-color: oklch(from var(--accent-color) l a / 20%);
    }

    /* Recommended Hotels Section */
    #recommended-hotels {
        margin-top: 3rem;
        padding: 2rem;
        background: var(--card-background);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-radius: 12px;
        box-shadow: 
            0 1px 3px 0 oklch(from var(--shadow-color) l a / 20%),
            0 5px 15px 0 oklch(from var(--shadow-color) l a / 15%),
            0 20px 40px -10px oklch(from var(--shadow-color) l a / 10%);
        border: 1px solid oklch(100% 0 0 / 20%);
    }

    #recommended-hotels h2 {
        font-size: clamp(1.8rem, 4vw, 2.5rem);
        color: var(--primary-color);
        text-align: center;
        margin-bottom: 2.5rem;
        text-shadow: 1px 1px 3px oklch(from var(--shadow-color) l a / 20%);
    }

    .hotel-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
    }

    .hotel-card {
        background-color: oklch(100% 0 0 / 60%);
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 4px 15px oklch(from var(--shadow-color) l a / 10%);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        display: flex;
        flex-direction: column;
    }

    .hotel-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px oklch(from var(--shadow-color) l a / 20%);
    }

    .hotel-card img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-bottom: 1px solid oklch(from var(--primary-color) l a / 20%);
    }

    .hotel-card h3 {
        color: var(--primary-color);
        font-size: 1.5rem;
        margin: 1rem 1rem 0.5rem;
    }

    .hotel-card .location {
        font-size: 0.9rem;
        color: var(--text-color);
        margin: 0 1rem 0.5rem;
        opacity: 0.8;
    }

    .hotel-card .attraction-proximity {
        font-size: 0.85rem;
        color: var(--primary-color);
        margin: -0.25rem 1rem 0.5rem;
        font-weight: bold;
    }

    .hotel-card .description {
        font-size: 0.95rem;
        line-height: 1.5;
        margin: 0 1rem 1rem;
        flex-grow: 1;
    }

    .hotel-card a {
        display: block;
        background-color: var(--accent-color);
        color: var(--text-color);
        text-align: center;
        padding: 0.8rem;
        margin: 1rem;
        border-radius: 6px;
        text-decoration: none;
        font-weight: bold;
        transition: background-color 0.2s ease, transform 0.2s ease;
    }

    .hotel-card a:hover {
        background-color: oklch(from var(--accent-color) l c h / 0.8); /* Slightly darker accent */
        transform: translateY(-1px);
    }
}