:root {
    --background-color: #f8f9fa;
    --text-color: #333;
    --header-bg: linear-gradient(45deg, #0071c2, #00c2a8);
    --hero-overlay: rgba(0, 0, 0, 0.5);
    --form-bg: #ffffff;
    --form-text-color: #555;
    --form-border-color: #e0e0e0;
    --button-bg: linear-gradient(45deg, #00c2a8, #0071c2);
    --button-hover-bg: linear-gradient(45deg, #00a890, #005a9e);
    --card-bg: #fff;
    --card-shadow: 0 8px 25px rgba(0,0,0,0.08);
    --card-hover-shadow: 0 12px 30px rgba(0,0,0,0.12);
    --heading-color: #1a2b48;
    --primary-color: #0071c2;
    --secondary-color: #00c2a8;
}

[data-theme="dark"] {
    --background-color: #121212;
    --text-color: #e0e0e0;
    --header-bg: #1f1f1f;
    --hero-overlay: rgba(0, 0, 0, 0.7);
    --form-bg: #1f1f1f;
    --form-text-color: #bbb;
    --form-border-color: #444;
    --button-bg: linear-gradient(45deg, #00c2a8, #0071c2);
    --button-hover-bg: linear-gradient(45deg, #00a890, #005a9e);
    --card-bg: #1f1f1f;
    --card-shadow: 0 8px 25px rgba(0,0,0,0.2);
    --card-hover-shadow: 0 12px 30px rgba(0,0,0,0.3);
    --heading-color: #e0e0e0;
    --primary-color: #00a890;
    --secondary-color: #0071c2;
}


body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    background-image: url('https://www.transparenttextures.com/patterns/subtle-noise.png');
    transition: background-color 0.3s, color 0.3s;
}

.main-header {
    background: var(--header-bg);
    color: white;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: background 0.3s;
}

.logo {
    font-size: 1.8em;
    font-weight: 700;
}

.hero {
    background: url('https://images.unsplash.com/photo-1501785888041-af3ef285b470?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
    color: white;
    text-align: center;
    padding: 80px 20px 200px; /* Increased padding-bottom */
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--hero-overlay);
    transition: background 0.3s;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-bottom: 20px;
}

.hero h1 {
    font-size: 3.5em;
    font-weight: 700;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.4em;
    font-weight: 300;
}

.search-form-container {
    position: relative;
    top: 50px; /* Adjust this value as needed to position the search panel below the title */
}

.search-form-container form {
    display: flex;
    background-color: var(--form-bg);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    align-items: flex-end;
    transition: background-color 0.3s;
}

.form-group {
    padding: 25px;
    flex-grow: 1;
    border-right: 1px solid var(--form-border-color);
    transition: border-color 0.3s;
}

.form-group:last-of-type {
    border-right: none;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--form-text-color);
    font-size: 0.9em;
    transition: color 0.3s;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1em;
    background-color: var(--form-bg);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.destination-group {
    flex-basis: 30%;
}

.date-group {
    flex-basis: 30%; /* Adjusted to make space for budget */
}

.pax-group {
    flex-basis: 15%;
}

.budget-group {
    flex-basis: 15%;
}

.date-inputs {
    display: flex;
    gap: 10px;
}

.search-form-container button {
    background: var(--button-bg);
    color: white;
    border: none;
    padding: 25px 35px;
    cursor: pointer;
    font-size: 1.2em;
    font-weight: 600;
    align-self: stretch;
    transition: background 0.3s ease;
}

.search-form-container button:hover {
    background: var(--button-hover-bg);
}

.results-container {
    max-width: 1100px;
    margin: 80px auto 40px;
    padding: 0 20px;
}

#hotel-suggestion h2, #airline-suggestion h2, #itinerary-output h2 {
    font-size: 2.2em;
    color: var(--heading-color);
    margin-bottom: 25px;
    text-align: center;
    transition: color 0.3s;
}

.hotel-list, .airline-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.hotel-card, .itinerary-day-card {
    background: var(--card-bg);
    border: none;
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s;
    text-align: center; /* Center-align content within the cards */
}

.hotel-card:hover, .itinerary-day-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.hotel-card h3 {
    font-size: 1.5em;
    margin-top: 0;
    color: var(--primary-color);
    transition: color 0.3s;
}

.hotel-card p {
    font-size: 1em; /* Explicitly set for consistency */
    line-height: 1.7;
}

.itinerary-day-card h3 {
    font-size: 1.8em;
    color: var(--heading-color);
    margin-top: 0;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    transition: color 0.3s, border-color 0.3s;
}

.itinerary-day-card ul {
    list-style-type: none;
    padding: 0;
}

.itinerary-day-card li {
    font-size: 1.1em;
    margin-bottom: 12px;
    line-height: 1.6;
}

.itinerary-day-card b {
    color: var(--primary-color);
    font-weight: 600;
    transition: color 0.3s;
}

.form-section {
    max-width: 800px;
    margin: 80px auto 40px;
    padding: 40px;
    background-color: var(--form-bg);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transition: background-color 0.3s;
}

.form-section h2 {
    font-size: 2.2em;
    color: var(--heading-color);
    margin-bottom: 30px;
    text-align: center;
    transition: color 0.3s;
}

.form-section .form-group {
    margin-bottom: 20px;
    padding: 0; /* Override previous padding */
    border-right: none; /* Override previous border */
}

.form-section label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--form-text-color);
}

.form-section input[type="email"],
.form-section textarea {
    width: calc(100% - 22px); /* Account for padding and border */
    padding: 10px;
    border: 1px solid var(--form-border-color);
    border-radius: 6px;
    font-size: 1em;
    background-color: var(--form-bg);
    color: var(--text-color);
    transition: border-color 0.3s, background-color 0.3s, color 0.3s;
}

.form-section textarea {
    resize: vertical;
}

.form-section button[type="submit"] {
    display: block;
    width: 100%;
    padding: 15px;
    margin-top: 20px;
    background: var(--button-bg);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.2em;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.form-section button[type="submit"]:hover {
    background: var(--button-hover-bg);
}

.loading-spinner {
    border: 6px solid #f3f3f3;
    border-top: 6px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 50px auto;
    display: none;
    transition: border-top-color 0.3s;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

.theme-switch {
    display: inline-block;
    height: 34px;
    position: relative;
    width: 60px;
}

.theme-switch input {
    display:none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
}

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}