/* ============================================
   VTG Course Registration - Frontend Styles
   Google Sans font, Green palette, Compact design
   ============================================ */

/* Google Sans Font Import (Using Nunito Sans as closest alternative) */
@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:wght@400;500;600;700;800&display=swap');

/* CSS Variables - Natural Green Palette */
:root {
    --vtg-primary: #3d6b4a;
    --vtg-primary-dark: #2d5037;
    --vtg-primary-light: #d4e5d9;
    --vtg-secondary: #6b7280;
    --vtg-success: #3d6b4a;
    --vtg-danger: #ef4444;
    --vtg-warning: #f59e0b;
    --vtg-light: #f9fafb;
    --vtg-dark: #111827;
    --vtg-white: #ffffff;
    --vtg-border: #e5e7eb;
    --vtg-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
    --vtg-shadow-lg: 0 6px 16px rgba(0, 0, 0, 0.08);
    --vtg-radius: 10px;
    --vtg-radius-sm: 6px;
    --vtg-transition: all 0.25s ease;
}

/* Reset and Base */
.vtg-courses-container *,
.vtg-registration-container * {
    box-sizing: border-box;
    font-family: 'Nunito Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ============================================
   Courses Display
   ============================================ */

.vtg-courses-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 16px;
}

.vtg-no-courses-message {
    text-align: center;
    padding: 40px 20px;
    background: var(--vtg-light);
    border-radius: var(--vtg-radius);
    color: var(--vtg-secondary);
}

/* Course List - Full Width */
.vtg-courses-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

@media (max-width: 768px) {
    .vtg-courses-list {
        gap: 20px;
    }
}

/* Elegant Course Card - Full Width */
.vtg-course-card {
    background: var(--vtg-white);
    border-radius: var(--vtg-radius);
    box-shadow: var(--vtg-shadow);
    transition: var(--vtg-transition);
    overflow: hidden;
    position: relative;
    border: 1px solid var(--vtg-border);
}

.vtg-course-card:hover {
    box-shadow: var(--vtg-shadow-lg);
    transform: translateY(-2px);
    border-color: var(--vtg-primary-light);
}

.vtg-course-card.vtg-course-unavailable {
    opacity: 0.65;
}

.vtg-course-card.vtg-course-unavailable:hover {
    transform: none;
}

.vtg-course-card-inner {
    padding: 30px;
}

@media (max-width: 768px) {
    .vtg-course-card-inner {
        padding: 20px;
    }
}

.vtg-course-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--vtg-danger);
    color: var(--vtg-white);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Course Header */
.vtg-course-header {
    margin-bottom: 20px;
}

.vtg-course-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--vtg-dark);
    margin: 0 0 10px 0;
    line-height: 1.3;
}

@media (max-width: 768px) {
    .vtg-course-name {
        font-size: 1.25rem;
    }
}

.vtg-course-location {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--vtg-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* Icons */
.vtg-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--vtg-primary);
}

.vtg-icon-inline {
    width: 16px;
    height: 16px;
    margin-left: 6px;
    vertical-align: middle;
}

/* Course Dates */
.vtg-course-dates {
    margin: 20px 0;
    padding: 18px;
    background: var(--vtg-primary-light);
    border-radius: var(--vtg-radius-sm);
}

@media (max-width: 768px) {
    .vtg-course-dates {
        padding: 14px;
        margin: 16px 0;
    }
}

.vtg-date-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
}

.vtg-date-item:last-child {
    margin-bottom: 0;
}

.vtg-date-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.vtg-date-label {
    font-size: 0.75rem;
    color: var(--vtg-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.vtg-date-value {
    font-size: 0.95rem;
    color: var(--vtg-dark);
    font-weight: 500;
}

/* Course Description */
.vtg-course-description {
    margin: 20px 0;
    color: var(--vtg-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .vtg-course-description {
        font-size: 0.9rem;
    }
}

/* Course Footer */
.vtg-course-footer {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--vtg-border);
}

.vtg-course-spots {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--vtg-dark);
    font-weight: 600;
}

.vtg-spots-low {
    color: var(--vtg-danger);
    font-weight: 700;
}

.vtg-course-deadline {
    margin-bottom: 18px;
    color: var(--vtg-secondary);
    font-size: 0.85rem;
}

/* Buttons - Green theme */
.vtg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--vtg-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--vtg-transition);
    text-decoration: none;
    width: 100%;
    text-align: center;
    background: var(--vtg-primary);
    color: var(--vtg-white);
}

@media (max-width: 768px) {
    .vtg-btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}

.vtg-btn:hover {
    background: var(--vtg-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(61, 107, 74, 0.25);
}

.vtg-btn-disabled {
    background: var(--vtg-secondary) !important;
    color: var(--vtg-white) !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
}

.vtg-btn-disabled:hover {
    transform: none !important;
    box-shadow: none !important;
}

/* ============================================
   Registration Form - Compact
   ============================================ */

.vtg-registration-container {
    max-width: 700px;
    margin: 30px auto;
    padding: 16px;
    position: relative;
}

@media (max-width: 768px) {
    .vtg-registration-container {
        margin: 20px auto;
    }
}

.vtg-registration-step {
    background: var(--vtg-white);
    border-radius: var(--vtg-radius);
    box-shadow: var(--vtg-shadow-lg);
    padding: 30px;
    transition: var(--vtg-transition);
    border: 1px solid var(--vtg-border);
}

@media (max-width: 768px) {
    .vtg-registration-step {
        padding: 20px;
    }
}

/* Form Header - Compact */
.vtg-form-header {
    margin-bottom: 25px;
}

.vtg-form-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--vtg-dark);
    margin: 0 0 8px 0;
}

@media (max-width: 768px) {
    .vtg-form-title {
        font-size: 1.5rem;
    }
}

.vtg-form-subtitle {
    font-size: 0.9rem;
    color: var(--vtg-secondary);
    margin: 0;
}

/* Course Info Box - Natural green gradient, compact */
.vtg-course-info-box {
    background: linear-gradient(135deg, #3d6b4a 0%, #2d5037 100%);
    color: var(--vtg-white);
    padding: 18px;
    border-radius: var(--vtg-radius);
    margin-top: 16px;
}

@media (max-width: 768px) {
    .vtg-course-info-box {
        padding: 14px;
    }
}

.vtg-course-info-box h3 {
    margin: 0 0 12px 0;
    font-size: 1.15rem;
    font-weight: 700;
}

.vtg-info-grid {
    display: grid;
    gap: 10px;
    margin-bottom: 12px;
}

.vtg-info-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.875rem;
}

.vtg-info-item .vtg-icon {
    margin-top: 2px;
    color: var(--vtg-white);
}

.vtg-spots-info {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    font-size: 0.85rem;
    font-weight: 600;
}

/* Form Sections - Compact */
.vtg-form-section {
    margin-bottom: 25px;
}

@media (max-width: 768px) {
    .vtg-form-section {
        margin-bottom: 20px;
    }
}

.vtg-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--vtg-dark);
    margin: 0 0 16px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--vtg-primary);
}

@media (max-width: 768px) {
    .vtg-section-title {
        font-size: 1rem;
        margin-bottom: 14px;
    }
}

/* Form Groups - Compact */
.vtg-form-group {
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .vtg-form-group {
        margin-bottom: 14px;
    }
}

.vtg-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 768px) {
    .vtg-form-row {
        grid-template-columns: 1fr;
        gap: 14px;
    }
}

.vtg-form-group label {
    display: block;
    font-weight: 600;
    color: var(--vtg-dark);
    margin-bottom: 6px;
    font-size: 0.875rem;
}

.vtg-form-group .required {
    color: var(--vtg-danger);
}

.vtg-form-group input[type="text"],
.vtg-form-group input[type="email"],
.vtg-form-group input[type="tel"],
.vtg-form-group input[type="date"],
.vtg-form-group select,
.vtg-form-group textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9rem;
    border: 1.5px solid var(--vtg-border);
    border-radius: var(--vtg-radius-sm);
    transition: var(--vtg-transition);
    font-family: inherit;
    max-width: 100%;
}

@media (max-width: 768px) {
    .vtg-form-group input[type="text"],
    .vtg-form-group input[type="email"],
    .vtg-form-group input[type="tel"],
    .vtg-form-group input[type="date"],
    .vtg-form-group select,
    .vtg-form-group textarea {
        padding: 9px 12px;
        font-size: 0.875rem;
        box-sizing: border-box;
    }
    
    /* Fix date input on mobile */
    .vtg-form-group input[type="date"] {
        min-width: 0;
        width: 100%;
    }
}

.vtg-form-group input:focus,
.vtg-form-group select:focus,
.vtg-form-group textarea:focus {
    outline: none;
    border-color: var(--vtg-primary);
    box-shadow: 0 0 0 3px rgba(61, 107, 74, 0.1);
}

.vtg-form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Checkbox Group - Compact */
.vtg-checkbox-group {
    padding: 12px;
    background: var(--vtg-primary-light);
    border-radius: var(--vtg-radius-sm);
}

@media (max-width: 768px) {
    .vtg-checkbox-group {
        padding: 10px;
    }
}

.vtg-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .vtg-checkbox-label {
        font-size: 0.875rem;
    }
}

.vtg-checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--vtg-primary);
}

/* Form Actions - Compact */
.vtg-form-actions {
    margin-top: 24px;
    display: flex;
    justify-content: flex-end;
}

@media (max-width: 768px) {
    .vtg-form-actions {
        margin-top: 20px;
    }
}

.vtg-form-actions-split {
    justify-content: space-between;
}

@media (max-width: 768px) {
    .vtg-form-actions,
    .vtg-form-actions-split {
        flex-direction: column;
        gap: 12px;
    }
    
    .vtg-form-actions .vtg-btn {
        width: 100%;
    }
}

/* Primary Button - Always Green */
.vtg-btn-primary,
#vtg-preview-btn,
#vtg-submit-btn {
    background: var(--vtg-primary) !important;
    color: var(--vtg-white) !important;
    border: none !important;
}

.vtg-btn-primary:hover,
#vtg-preview-btn:hover,
#vtg-submit-btn:hover {
    background: var(--vtg-primary-dark) !important;
    transform: translateY(-1px);
}

/* Secondary Button */
.vtg-btn-secondary,
#vtg-back-btn {
    background: var(--vtg-white);
    color: var(--vtg-dark);
    border: 2px solid var(--vtg-border);
}

.vtg-btn-secondary:hover,
#vtg-back-btn:hover {
    background: var(--vtg-light);
    border-color: var(--vtg-primary);
}

/* General Button Styling */
.vtg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 11px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--vtg-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--vtg-transition);
    text-decoration: none;
    text-align: center;
}

@media (max-width: 768px) {
    .vtg-btn {
        padding: 10px 16px;
        font-size: 0.875rem;
    }
}

/* Confirmation Box - Compact */
.vtg-confirmation-box {
    background: var(--vtg-light);
    border-radius: var(--vtg-radius);
    padding: 18px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .vtg-confirmation-box {
        padding: 14px;
        margin-bottom: 16px;
    }
}

.vtg-confirmation-box h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--vtg-dark);
    margin: 0 0 12px 0;
}

.vtg-confirmation-item {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--vtg-border);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .vtg-confirmation-item {
        grid-template-columns: 1fr;
        gap: 4px;
        padding: 8px 0;
        font-size: 0.875rem;
    }
}

.vtg-confirmation-item:last-child {
    border-bottom: none;
}

.vtg-confirmation-item strong {
    color: var(--vtg-secondary);
    font-weight: 600;
}

.vtg-confirmation-item span {
    color: var(--vtg-dark);
}

/* Success Message - Compact with Green */
.vtg-success-message {
    text-align: center;
    padding: 50px 20px;
}

@media (max-width: 768px) {
    .vtg-success-message {
        padding: 40px 16px;
    }
}

.vtg-success-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--vtg-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .vtg-success-icon {
        width: 60px;
        height: 60px;
    }
}

.vtg-success-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--vtg-white);
    stroke-width: 3;
}

@media (max-width: 768px) {
    .vtg-success-icon svg {
        width: 32px;
        height: 32px;
    }
}

.vtg-success-message h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--vtg-dark);
    margin: 0 0 12px 0;
}

@media (max-width: 768px) {
    .vtg-success-message h2 {
        font-size: 1.5rem;
    }
}

.vtg-success-message p {
    font-size: 1rem;
    color: var(--vtg-secondary);
    margin: 8px 0;
}

@media (max-width: 768px) {
    .vtg-success-message p {
        font-size: 0.9rem;
    }
}

.vtg-success-details {
    margin-top: 16px;
    font-weight: 600;
    color: var(--vtg-primary);
}

/* Loading Overlay - Compact */
.vtg-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--vtg-radius);
    z-index: 1000;
}

.vtg-spinner {
    width: 44px;
    height: 44px;
    border: 3px solid var(--vtg-border);
    border-top-color: var(--vtg-primary);
    border-radius: 50%;
    animation: vtg-spin 0.7s linear infinite;
}

@media (max-width: 768px) {
    .vtg-spinner {
        width: 40px;
        height: 40px;
    }
}

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

.vtg-loading p {
    margin-top: 16px;
    color: var(--vtg-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Error Messages */
.vtg-error {
    background: #fef2f2;
    border-left: 4px solid var(--vtg-danger);
    color: #991b1b;
    padding: 14px 18px;
    border-radius: var(--vtg-radius-sm);
    margin: 16px 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .vtg-error {
        padding: 12px 14px;
        font-size: 0.875rem;
    }
}

.vtg-no-course-selected {
    display: flex;
    align-items: center;
    max-width: 600px;
    margin: 40px auto;
    padding: 20px;
}

@media (max-width: 768px) {
    .vtg-no-course-selected {
        margin: 30px auto;
        padding: 16px;
    }
}

/* Animations */
@keyframes vtg-fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.vtg-step-active {
    animation: vtg-fadeIn 0.35s ease;
}