/* --- Sleek & Modern Dark Theme --- */

/* :root contains all the core design variables. 
   Change colors here to update the entire application. */
:root {
    --bg-color: #121212; /* Main background */
    --content-bg: #1e1e1e; /* Background for containers, forms */
    --border-color: #333333; /* Borders for inputs and tables */
    --primary-color: #3671E9; /* Main accent color for buttons */
    --primary-hover: #2a62d0; /* Button hover color */
    --text-color: #e0e0e0; /* Main text color */
    --subtle-text: #888888; /* Lighter text for labels, placeholders */
    --error-bg: rgba(255, 82, 82, 0.1);
    --error-text: #ff8a8a;
    --error-border: rgba(255, 82, 82, 0.2);
    --success-bg: rgba(46, 204, 113, 0.1);
    --success-text: #2ecc71;
    --success-border: rgba(46, 204, 113, 0.2);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* --- General Body & Font Styling --- */
body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
}

/* --- Main Layout Container --- */
.container {
    background: var(--content-bg);
    margin: 0 auto;
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 1200px;
    box-sizing: border-box;
}

/* --- Login Page Specific Styling --- */
body.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}
.login-container {
    padding: 3rem;
    width: 100%;
    max-width: 420px;
}
.login-container h1 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 2.5rem;
    color: #ffffff;
    border: none;
    font-weight: 600;
}

/* --- Header & Navigation --- */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.header h1 {
    font-size: 1.5rem;
    margin: 0;
    border: none;
    color: #ffffff;
}
.navigation {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.nav-link {
    text-decoration: none;
    color: var(--subtle-text);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: background-color 0.2s, color 0.2s;
}
.nav-link:hover {
    color: #ffffff;
    background-color: #2b2b2b;
}
.nav-link.active {
    background-color: var(--primary-color);
    color: white;
}
.logout-link {
    color: var(--error-text);
    font-weight: 500;
}
.logout-link:hover {
    color: #ff5252;
}

/* --- Section Headings --- */
h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #ffffff;
    border: none;
    padding: 0;
}

/* --- Grid Layout for Forms --- */
.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

/* --- Form Sections --- */
.form-section {
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--content-bg);
    overflow: hidden; /* Important for animations */
}

/* --- Form Elements --- */
label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--subtle-text);
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="file"],
select {
    width: 100%;
    padding: 0.9rem;
    margin-bottom: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1rem;
    background-color: #2b2b2b;
    color: var(--text-color);
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(54, 113, 233, 0.2);
}

input[type="file"] {
    padding: 0.6rem;
}
input[type="file"]::file-selector-button {
    background-color: #333;
    color: var(--text-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    margin-right: 1rem;
}

/* --- Buttons --- */
button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.9rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    width: 100%;
    transition: background-color 0.2s;
    position: relative;
}

button:hover {
    background-color: var(--primary-hover);
}

button:disabled {
    background-color: #555;
    cursor: not-allowed;
}

/* NEW: Loading spinner for buttons */
.spinner {
    display: none;
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}
button.loading .spinner {
    display: block;
}
@keyframes spin {
    to { transform: translateY(-50%) rotate(360deg); }
}

.pay-button-link {
    text-decoration: none;
}

/* --- Message Banners --- */
.message {
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    border: 1px solid transparent;
    display: none; /* Hidden by default */
}
.success {
    background-color: var(--success-bg);
    color: var(--success-text);
    border-color: var(--success-border);
}
.error {
    background-color: var(--error-bg);
    color: var(--error-text);
    border-color: var(--error-border);
}

/* --- Payment Result Box --- */
.result-box {
    margin-top: 2rem;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    display: none; /* Hidden by default */
    border-style: solid;
    border-width: 1px;
}
.result-box .amount {
    font-size: 2.5rem;
    font-weight: 700;
}
/* NEW: Color coding for result box */
.result-box.payment-due {
    background: #2b2b2b;
    border-color: var(--border-color);
}
.result-box.payment-due .amount {
    color: var(--primary-color);
}
.result-box.refund-due {
    background-color: var(--success-bg);
    border-color: var(--success-border);
}
.result-box.refund-due .amount {
    color: var(--success-text);
}
.result-box.settled {
    background-color: #2b2b2b;
    border-color: var(--subtle-text);
}
.result-box.settled .amount {
    color: var(--text-color);
}


/* --- History Page Table --- */
.table-wrapper {
    overflow-x: auto;
}
.history-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}
.history-table th, .history-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
    white-space: nowrap;
}
.history-table thead th {
    background-color: #2b2b2b;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--subtle-text);
}
.history-table tbody tr:hover {
    background-color: #252525;
}
.history-table .license-link {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background-color: var(--subtle-text);
    color: var(--bg-color);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.2s;
}
.history-table .license-link:hover {
    background-color: #a0a0a0;
}

/* --- NEW: Ongoing Booking List Styles --- */
.booking-item {
    background-color: #2b2b2b;
    padding: 1rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s, transform 0.2s;
}
.booking-item:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
}
.booking-item h4 {
    margin: 0 0 0.5rem 0;
    color: var(--text-color);
}
.booking-item p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--subtle-text);
}

/* --- NEW: Styles for the End Trip form view --- */
.form-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}
.back-button {
    background: none;
    border: none;
    color: var(--subtle-text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 1rem 0 0;
    margin-right: 0.5rem;
}
/* NEW: Styles for details display */
#booking-details-display {
    background-color: #2b2b2b;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}
.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}
.details-grid h4 {
    color: var(--subtle-text);
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 500;
}
.details-grid p {
    margin: 0;
    font-size: 1rem;
    color: var(--text-color);
    font-weight: 600;
}


/* --- NEW: Animation Styles --- */
.view {
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
}
.view.hidden {
    opacity: 0;
    transform: translateX(-10px);
    display: none;
}
.dynamic-content {
    animation: fade-in 0.4s ease-out;
}
@keyframes fade-in {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}


/* --- Responsive Design --- */
@media (max-width: 992px) {
    .grid {
        grid-template-columns: 1fr;
    }
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    .container {
        padding: 1.5rem;
    }
}