:root {
    --bg: #ffffff;
    --bg-alt: #f5f5f5;
    --text: #1a1a1a;
    --text-light: #666666;
    --text-lighter: #999999;
    --border: #e0e0e0;
    --accent: #1a1a1a;
}

body.dark-mode {
    --bg: #1a1a1a;
    --bg-alt: #262626;
    --text: #ffffff;
    --text-light: #b0b0b0;
    --text-lighter: #888888;
    --border: #333333;
    --accent: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* NAVBAR */

.navbar {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    color: var(--accent);
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.theme-toggle {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 14px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s ease;
    border-radius: 3px;
}

.theme-toggle:hover {
    background-color: var(--bg-alt);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-logout {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 10px 14px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    border-radius: 3px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-logout:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-admin {
    background: var(--accent);
    color: var(--bg);
    border: 1px solid var(--accent);
    padding: 10px 14px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    border-radius: 3px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-admin:hover {
    background-color: rgba(26, 26, 26, 0.9);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-admin.hidden {
    display: none;
}

/* MAIN CONTENT */

main {
    background: var(--bg);
    min-height: calc(100vh - 80px);
    padding: 50px 40px;
    flex: 1;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* HERO SECTION */

.hero {
    text-align: center;
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 50px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 300;
    letter-spacing: -1px;
    color: var(--accent);
    margin-bottom: 15px;
}

.hero p {
    font-size: 16px;
    color: var(--text-light);
}

/* BOOKING SECTION */

.booking-section {
    width: 100%;
}

.form-wrapper {
    background-color: var(--bg-alt);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 40px;
    border-radius: 4px;
}

.form-wrapper h2 {
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
    color: var(--text);
    font-weight: 600;
}

.booking-form {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

legend {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-field label {
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text);
}

.form-field input,
.form-field select,
.form-field textarea {
    padding: 14px 16px;
    border: 1px solid var(--border);
    background-color: var(--bg);
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
    color: var(--text-lighter);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.05);
}

body.dark-mode .form-field input:focus,
body.dark-mode .form-field select:focus,
body.dark-mode .form-field textarea:focus {
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

.form-field textarea {
    resize: vertical;
    min-height: 120px;
}

/* CHECKBOX GROUP */

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    border: 1px solid var(--border);
    border-radius: 3px;
    accent-color: var(--accent);
}

/* FORM ACTIONS */

.form-actions {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.btn-submit {
    background-color: var(--accent);
    color: var(--bg);
    padding: 14px 32px;
    border: 1px solid var(--accent);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    border-radius: 3px;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 400px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-submit:hover {
    background-color: rgba(26, 26, 26, 0.9);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-submit:active {
    transform: scale(0.98);
}

body.dark-mode .btn-submit {
    background-color: var(--accent);
    color: var(--bg);
}

body.dark-mode .btn-submit:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

/* SUCCESS MESSAGE */

.success-message {
    display: none;
    text-align: center;
    padding: 20px;
    background-color: #efe;
    color: #060;
    border: 1px solid #b0f0b0;
    border-radius: 4px;
    margin-top: 20px;
}

.success-message.hidden {
    display: none;
}

.success-message:not(.hidden) {
    display: block;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
    font-weight: 600;
}

.success-content p {
    margin-bottom: 15px;
    font-size: 14px;
}

.btn-reset {
    background-color: #060;
    color: #ffffff;
    padding: 10px 20px;
    border: 1px solid #060;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    border-radius: 3px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-reset:hover {
    background-color: #050;
    box-shadow: 0 4px 12px rgba(0, 100, 0, 0.2);
}

/* FOOTER */

.footer {
    background: var(--bg-alt);
    color: var(--text-light);
    text-align: center;
    padding: 30px;
    border-top: 1px solid var(--border);
    margin-top: auto;
    font-size: 12px;
}

.footer p {
    margin: 0;
}

/* RESPONSIVE DESIGN */

@media (max-width: 1024px) {
    main {
        padding: 40px 30px;
    }

    .nav-container {
        padding: 18px 30px;
    }

    .form-wrapper {
        padding: 30px;
    }
}

@media (max-width: 768px) {
    main {
        padding: 30px 20px;
    }

    .nav-container {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .form-wrapper {
        padding: 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    legend {
        font-size: 12px;
    }

    .btn-submit {
        padding: 12px 24px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    main {
        padding: 20px 15px;
    }

    .hero {
        padding: 30px 0;
        margin-bottom: 30px;
    }

    .hero h1 {
        font-size: 24px;
        margin-bottom: 12px;
    }

    .hero p {
        font-size: 14px;
    }

    .form-wrapper {
        padding: 15px;
        border-radius: 3px;
    }

    .form-wrapper h2 {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .booking-form {
        gap: 20px;
    }

    legend {
        margin-bottom: 12px;
        padding-bottom: 10px;
    }

    .form-field label {
        font-size: 12px;
    }

    .form-field input,
    .form-field select,
    .form-field textarea {
        padding: 12px 14px;
        font-size: 13px;
    }

    .btn-submit {
        padding: 12px 16px;
        font-size: 12px;
    }

    .footer {
        padding: 20px;
        font-size: 11px;
    }
}