:root {
    --himalayan-blue: #5A93E9;
    --saffron: #FF9933;
    --terracotta-brown: #E2725B;
    --evergreen-green: #00703C;
    --evergreen-green-shade: #005A30;
    --goldenrod-gold: #DAA520;
    --mountain-rock-gray: #808080;
    --lotus-pink: #FF7F7F;
    --monastery-maroon: #800000;
    --cloud-white: #FFFFFF;
    --sunrise-orange: #FF6F00;
    --frost-gray: #f2f2f2;
    --highlight-color: #2c3e50;
    --highlight-background: #ecf0f1;
}
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85), rgba(240, 242, 245, 0.9));
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    display: none;
    transition: opacity 0.4s ease;
}

.loading-overlay[style*="display: flex"] {
    opacity: 1;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #dcdcdc;
    border-top: 5px solid #2e7d32;
    border-radius: 50%;
    animation: spin 0.8s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.success-icon {
    width: 60px;
    height: 60px;
    filter: drop-shadow(0 3px 8px rgba(0, 0, 0, 0.2));
    animation: bounceIn 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    60% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(1); }
}

@media (max-width: 600px) {
    .loading-spinner {
        width: 40px;
        height: 40px;
        border-width: 4px;
    }

    .success-icon {
        width: 48px;
        height: 48px;
    }
}
/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--cloud-white);
    border-radius: 20px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
}

/* Image Background */
.image-background {
    width: 100%;
    height: 220px;
    background-size: cover;
    background-position: center;
    position: relative;
    border-radius: 20px 20px 0 0;
}

/* Overlay */
.overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 112, 60, 0.7);
    border-radius: 20px 20px 0 0;
}

/* Content Wrapper */
.content-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    font-family: var(--font-family);
    box-sizing: border-box;
}

/* Content */
.content {
    text-align: center;
    color: var(--cloud-white);
    max-width: 90%;
    background: rgba(0, 0, 0, 0.3);
    padding: 10px;
    border-radius: 12px;
    backdrop-filter: blur(4px);
    margin: 0;
}

/* Content Heading */
.content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 8px;
}

.trek-details {
    display: flex !important;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    width: 100%;
    margin: 0;
    min-height: 30px; /* Ensure space even when empty */
    visibility: visible; /* Prevent accidental hiding */
}

/* Trek Details Paragraph */
.trek-details p {
    font-size: 0.9rem;
    margin: 0;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    flex: 1 1 calc(50% - 8px);
    box-sizing: border-box;
    text-align: left;
}

/* Trek Details Strong */
.trek-details strong {
    color: var(--goldenrod-gold);
    font-weight: 600;
    margin-right: 4px;
}

/* Booking Form Container */
.booking-form-container {
    padding: 30px;
    background: var(--cloud-white);
    border-radius: 0 0 20px 20px;
}

/* Form Header */
.form-header {
    text-align: center;
    margin-bottom: 10px;
}

/* Hidden Trip Select */
#trip-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--evergreen-green);
    background: var(--cloud-white) url('https://www.thenepaltravelguide.com/booking/assets/icons/down.png') no-repeat right 12px center;
    background-size: 16px;
    cursor: pointer;
    appearance: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

#trip-select:hover {
    border-color: var(--evergreen-green);
    box-shadow: 0 4px 12px rgba(0, 112, 60, 0.15);
}

#trip-select:focus {
    border-color: var(--evergreen-green);
    box-shadow: 0 0 0 3px rgba(0, 112, 60, 0.1);
    outline: none;
    background-image: url('https://www.thenepaltravelguide.com/booking/assets/icons/up.png');
}

#trip-select:active {
    transform: scale(0.98);
}

#trip-select optgroup {
    font-weight: 600;
    color: var(--evergreen-green);
    background: var(--frost-gray);
}

#trip-select option {
    color: var(--highlight-color);
    background: var(--cloud-white);
}

/* Booking Form Heading */
.booking-form-container h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--evergreen-green);
    margin-bottom: 16px;
}

/* Booking Form */
.booking-form {
    display: grid;
    gap: 16px;
    width: 100%;
    box-sizing: border-box;
}

/* Form Row */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    width: 100%;
    box-sizing: border-box;
}

/* Form Group */
.form-group {
    display: flex;
    flex-direction: column;
    width: 100%;
    box-sizing: border-box;
    position: relative;
}

/* Form Group Label */
.form-group label {
    font-size: 0.9rem;
    color: var(--evergreen-green);
    font-weight: 600;
    margin-bottom: 6px;
}

/* Form Group Inputs */
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--cloud-white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    box-sizing: border-box;
    appearance: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--evergreen-green);
    box-shadow: 0 0 0 3px rgba(0, 112, 60, 0.1);
    outline: none;
    transform: scale(1.01);
}

.form-group input:invalid:not(:focus),
.form-group textarea:invalid:not(:focus) {
    border-color: var(--lotus-pink);
    box-shadow: 0 0 0 2px rgba(255, 127, 127, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
    max-height: 150px;
}

.form-group.invalid input,
.form-group.invalid select,
.form-group.invalid textarea {
    border-color: var(--lotus-pink);
}

/* Calendar Input */
.input-wrapper {
    position: relative;
    width: 100%;
}

.form-input {
    width: 100%;
    padding: 10px 34px 10px 10px;
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--cloud-white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    box-sizing: border-box;
}

.form-input:focus {
    border-color: var(--evergreen-green);
    box-shadow: 0 0 0 3px rgba(0, 112, 60, 0.1);
    outline: none;
    transform: scale(1.01);
}

.form-input:invalid:not(:focus) {
    border-color: var(--lotus-pink);
}

.calendar-icon {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background: url('../icons/calendar.webp') no-repeat center;
    background-size: cover;
    pointer-events: none;
}

/* Error Message */
.error-message {
    color: var(--lotus-pink);
    font-size: 0.75rem;
    margin-top: 4px;
    display: none;
}

.form-group.invalid .error-message {
    display: block;
}

/* Radio Container */
.radio-container {
    margin-bottom: 16px;
}

/* Radio Label */
.radio-label {
    font-size: 0.9rem;
    color: var(--evergreen-green);
    font-weight: 600;
    margin-bottom: 8px;
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Radio Option */
.radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--cloud-white);
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    flex: 1 1 calc(33% - 12px);
    box-sizing: border-box;
}

.radio-option:hover {
    border-color: var(--evergreen-green);
    background: var(--frost-gray);
    transform: scale(1.02);
}

.radio-option input[type="radio"] {
    appearance: none;
    width: 16px;
    height: 16px;
    margin: 0;
    border: 2px solid var(--frost-gray);
    border-radius: 50%;
    background: var(--cloud-white);
    cursor: pointer;
    position: relative;
}

.radio-option input[type="radio"]:checked {
    border-color: var(--evergreen-green);
    background: var(--evergreen-green);
}

.radio-option input[type="radio"]:checked::after {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--cloud-white);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.radio-option input[type="radio"]:hover {
    border-color: var(--evergreen-green);
}

.radio-option span {
    font-size: 0.9rem;
    color: var(--highlight-color);
    transition: color 0.2s ease;
}

.radio-option input[type="radio"]:checked + span {
    color: var(--evergreen-green);
}

/* Checkbox Group */
.checkbox-group {
    margin-top: 16px;
}

/* Checkbox Option */
.checkbox-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    background: var(--cloud-white);
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.checkbox-option:hover {
    border-color: var(--evergreen-green);
    background: var(--frost-gray);
    transform: scale(1.02);
}

.checkbox-option input[type="checkbox"] {
    appearance: none;
    width: 16px;
    height: 16px;
    margin: 0;
    border: 2px solid var(--frost-gray);
    border-radius: 4px;
    background: var(--cloud-white);
    cursor: pointer;
    position: relative;
}

.checkbox-option input[type="checkbox"]:checked {
    border-color: var(--evergreen-green);
    background: var(--evergreen-green);
}

.checkbox-option input[type="checkbox"]:checked::after {
    content: '✔';
    color: var(--cloud-white);
    font-size: 12px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.checkbox-option input[type="checkbox"]:hover {
    border-color: var(--evergreen-green);
}

.checkbox-option span {
    font-size: 0.9rem;
    color: var(--mountain-rock-gray);
    transition: color 0.2s ease;
}

.checkbox-option input[type="checkbox"]:checked + span {
    color: var(--evergreen-green);
}

.checkbox-option a {
    color: var(--evergreen-green);
    text-decoration: none;
    font-weight: 600;
}

.checkbox-option a:hover {
    text-decoration: underline;
}

/* Submit Button */
.submit-button {
    background: var(--evergreen-green);
    color: var(--cloud-white);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    width: 100%;
    max-width: 200px;
    margin: 16px auto 0;
    box-shadow: 0 4px 12px rgba(0, 112, 60, 0.15);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 112, 60, 0.2);
}



/* Existing disabled styles */
.search-input.disabled,
.type-filter.disabled,
.form-input.disabled {
    background-color: #f0f0f0;
    color: #888;
    cursor: not-allowed;
    opacity: 0.6;
}

.search-icon.disabled,
.clear-icon.disabled {
    opacity: 0.3;
    pointer-events: none;
}

.accordion-header.disabled {
    background-color: #f0f0f0;
    cursor: not-allowed;
    opacity: 0.6;
}

.option-checkbox:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.option-item.selected .option-checkbox:disabled {
    opacity: 1;
}

/* New tooltip styles */
.tooltip {
    display: none;
    position: absolute;
    background-color: #333;
    color: #fff;
    padding: 10px;
    border-radius: 4px;
    z-index: 1000;
    max-width: 300px;
    font-size: 14px;
    line-height: 1.5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    top: 100%;
    left: 0;
    margin-top: 5px;
}

.tooltip.visible {
    display: flex;
    align-items: center;
}

.tooltip-icon {
    width: 16px;
    height: 16px;
    margin-right: 8px;
}

.tooltip a {
    color: #1e90ff;
    text-decoration: underline;
}

.tooltip a:hover {
    color: #63b3ed;
}

/* Ensure parent has relative positioning */
.search-input-wrapper,
.controls-row,
.input-wrapper,
.accordion-header {
    position: relative;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .tooltip {
        max-width: 200px;
        font-size: 12px;
    }
}



/* Advanced Select */
.advanced-select {
    position: relative;
    width: 100%;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

.controls-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
}

.search-input {
    width: 100%;
    padding: 10px 48px 10px 12px;
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--cloud-white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.search-input::placeholder {
    color: var(--mountain-rock-gray);
    opacity: 1;
}

.search-input:focus {
    outline: none;
    border-color: var(--evergreen-green);
    box-shadow: 0 0 0 3px rgba(0, 112, 60, 0.1);
    transform: scale(1.01);
}

.search-input:invalid:not(:focus) {
    border-color: var(--lotus-pink);
    box-shadow: 0 0 0 2px rgba(255, 127, 127, 0.15);
}

.search-icon {
    position: absolute;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    pointer-events: none;
    opacity: 0.9;
}

.clear-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.clear-icon:hover {
    opacity: 1;
    transform: translateY(-50%) scale(1.2);
}

.type-filter {
    width: 160px;
    padding: 10px 12px;
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--cloud-white) url('../icons/arrow-down.webp') no-repeat right 12px center;
    background-size: 12px;
    appearance: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.type-filter:focus {
    outline: none;
    border-color: var(--evergreen-green);
    box-shadow: 0 0 0 3px rgba(0, 112, 60, 0.1);
    transform: scale(1.01);
}

.accordion-header {
    width: 100%;
    margin-bottom: 8px;
    cursor: pointer;
}

.selected-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--cloud-white);
    border: 1px solid var(--frost-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--highlight-color);
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.accordion-header:hover .selected-option {
    background: var(--frost-gray);
    border-color: var(--goldenrod-gold);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.check-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.accordion-arrow {
    width: 12px;
    height: 12px;
    margin-left: auto;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.accordion-header.selected .selected-option {
    background: var(--frost-gray);
    border-color: var(--evergreen-green);
    color: var(--evergreen-green);
}

.accordion-header.selected .check-icon {
    display: block;
}

.options-container {
    max-height: 0;
    overflow: hidden;
    border-radius: 8px;
    background: var(--cloud-white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: max-height 0.3s ease-out;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 10;
    contain: content;
}

.options-container.open {
    max-height: 240px;
    border: 1px solid var(--frost-gray);
    margin-bottom: 12px;
    overflow-y: auto;
}

.options-container-inner {
    flex: 1;
    min-height: min-content;
}

.options-container.open ~ .accordion-header .accordion-arrow {
    transform: rotate(180deg);
}

.option-group {
    border-bottom: 1px solid var(--frost-gray);
    position: relative;
    z-index: 1;
}

.option-group:last-child {
    border-bottom: none;
}

.option-group-title {
    padding: 8px 14px;
    background: var(--frost-gray);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--mountain-rock-gray);
    position: sticky;
    top: 0;
    z-index: 20;
}

.option-item {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    padding-top: 24px;
    cursor: pointer;
    position: relative;
    z-index: 5;
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--highlight-color);
}

.option-item:hover {
    background: var(--frost-gray);
    transform: translateX(2px);
    border-left: 3px solid var(--goldenrod-gold);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.option-item.selected {
    background: var(--frost-gray);
    font-weight: 600;
    border-left: 3px solid var(--evergreen-green);
    color: var(--evergreen-green);
}

.option-checkbox-container {
    position: relative;
    margin-right: 12px;
    z-index: 10;
    display: flex;
    align-items: center;
    height: 16px;
}

.option-checkbox {
    position: absolute;
    opacity: 0;
    width: 16px;
    height: 16px;
    cursor: pointer;
    z-index: 11;
}

.checkbox-custom {
    position: relative;
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 1px solid var(--mountain-rock-gray);
    border-radius: 4px;
    background: var(--cloud-white);
    transition: all 0.2s ease;
    z-index: 10;
}

.option-checkbox:checked ~ .checkbox-custom {
    background: var(--evergreen-green);
    border-color: var(--evergreen-green);
    transform: scale(1.15);
}

.option-checkbox:checked ~ .checkbox-custom::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 10px;
    height: 10px;
    background: url('../icons/check-white.webp') no-repeat center;
    background-size: contain;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.option-label {
    flex: 1;
    font-size: 0.9rem;
    margin-left: 8px;
    line-height: 1.5;
    color: var(--highlight-color);
}

/* Responsive Styles */
@media (max-width: 768px) {
    .main-container {
        margin: 12px auto;
        border-radius: 16px;
    }

    .content h2 {
        font-size: 1rem;
    }

    .trek-details p {
        font-size: 0.85rem;
    }

    .booking-form-container {
        padding: 16px;
    }

    .booking-form-container h3 {
        font-size: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-group input,
    .form-group textarea {
        padding: 8px;
        font-size: 0.85rem;
    }

    .form-input {
        padding: 8px 30px 8px 8px;
        font-size: 0.85rem;
    }

    .radio-option {
        flex: 1 1 100%;
        padding: 8px 12px;
    }

    .radio-option input[type="radio"] {
        width: 14px;
        height: 14px;
    }

    .radio-option span {
        font-size: 0.85rem;
    }

    .checkbox-option {
        padding: 8px;
    }

    .checkbox-option input[type="checkbox"] {
        width: 14px;
        height: 14px;
    }

    .checkbox-option span {
        font-size: 0.85rem;
    }

    .submit-button {
        max-width: 100%;
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .controls-row {
        flex-direction: column;
        gap: 10px;
    }

    .type-filter {
        width: 100%;
    }

    .search-input {
        padding: 8px 44px 8px 10px;
        font-size: 0.85rem;
    }

    .search-icon {
        right: 26px;
        width: 14px;
        height: 14px;
    }

    .clear-icon {
        right: 10px;
        width: 12px;
        height: 12px;
    }

    .selected-option {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .check-icon {
        width: 12px;
        height: 12px;
    }

    .accordion-arrow {
        width: 10px;
        height: 10px;
    }

    .option-group-title {
        padding: 6px 12px;
        font-size: 0.75rem;
    }

    .option-item {
        padding: 6px 14px;
        padding-top: 22px;
        font-size: 0.85rem;
        line-height: 1.4;
    }

    .option-checkbox-container {
        margin-right: 10px;
        height: 14px;
    }

    .option-checkbox,
    .checkbox-custom {
        width: 14px;
        height: 14px;
    }

    .option-checkbox:checked ~ .checkbox-custom::after {
        width: 8px;
        height: 8px;
    }

    .option-label {
        font-size: 0.85rem;
        margin-left: 6px;
        line-height: 1.4;
    }

    .options-container.open {
        max-height: 180px;
    }
}

@media (max-width: 480px) {
    .controls-row {
        gap: 8px;
    }

    .search-input {
        padding: 8px 40px 8px 8px;
    }

    .search-icon {
        right: 24px;
        width: 12px;
        height: 12px;
    }

    .clear-icon {
        right: 8px;
        width: 10px;
        height: 10px;
    }
}