/* =====================================================
   AMC Bookings — Frontend Styles
   Web3 Premium Design System (Apple/Linear/Vercel-inspired)
   ===================================================== */

/* --- CSS Custom Properties --- */
:root {
    --amc-primary: #667eea;
    --amc-primary-dark: #5a6fd6;
    --amc-primary-light: #ede9fe;
    --amc-secondary: #764ba2;
    --amc-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --amc-gradient-hover: linear-gradient(135deg, #5a6fd6 0%, #6a4193 100%);
    --amc-success: #10b981;
    --amc-success-light: #d1fae5;
    --amc-danger: #ef4444;
    --amc-danger-light: #fee2e2;
    --amc-warning: #f59e0b;
    --amc-warning-light: #fef3c7;
    --amc-gray-50: #f9fafb;
    --amc-gray-100: #f3f4f6;
    --amc-gray-200: #e5e7eb;
    --amc-gray-300: #d1d5db;
    --amc-gray-400: #9ca3af;
    --amc-gray-500: #6b7280;
    --amc-gray-600: #4b5563;
    --amc-gray-700: #374151;
    --amc-gray-800: #1f2937;
    --amc-gray-900: #111827;
    --amc-radius: 12px;
    --amc-radius-sm: 8px;
    --amc-radius-lg: 16px;
    --amc-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --amc-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --amc-shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --amc-shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --amc-shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
    --amc-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Dark Mode --- */
.dark {
    --amc-primary-light: #312252;
    --amc-gray-50: #1a1a2e;
    --amc-gray-100: #1f1f3a;
    --amc-gray-200: #2d2d4a;
    --amc-gray-300: #3d3d5c;
    --amc-gray-400: #6b6b8d;
    --amc-gray-500: #8888a4;
    --amc-gray-600: #a0a0b8;
    --amc-gray-700: #c8c8d8;
    --amc-gray-800: #e8e8f0;
    --amc-gray-900: #ffffff;
}

/* --- Container --- */
.amc-booking-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--amc-gray-800);
}

.amc-booking-warning {
    background: var(--amc-warning-light);
    border: 1px solid var(--amc-warning);
    border-radius: var(--amc-radius);
    padding: 16px 20px;
    margin-bottom: 24px;
    color: #92400e;
}

.dark .amc-booking-warning {
    color: #fbbf24;
}

.amc-booking-warning a {
    color: inherit;
    text-decoration: underline;
    font-weight: 600;
}

/* --- Layout --- */
.amc-booking-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 32px;
    align-items: start;
}

@media (max-width: 900px) {
    .amc-booking-layout {
        grid-template-columns: 1fr;
    }
    .amc-booking-invoice {
        order: -1;
    }
}

/* --- Form Section --- */
.amc-booking-form h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 24px;
    background: var(--amc-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.amc-booking-step {
    margin-bottom: 28px;
    padding: 24px;
    background: #fff;
    border: 1px solid var(--amc-gray-200);
    border-radius: var(--amc-radius);
    transition: var(--amc-transition);
}

.dark .amc-booking-step {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
}

.amc-booking-step h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 16px;
    color: var(--amc-gray-700);
    display: flex;
    align-items: center;
    gap: 10px;
}

.amc-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--amc-gradient);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

/* --- Service Cards --- */
.amc-service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.amc-service-card {
    padding: 20px;
    border: 2px solid var(--amc-gray-200);
    border-radius: var(--amc-radius);
    cursor: pointer;
    transition: var(--amc-transition);
    position: relative;
    background: #fff;
}

.dark .amc-service-card {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
}

.amc-service-card:hover {
    border-color: var(--amc-primary);
    box-shadow: var(--amc-shadow-md);
    transform: translateY(-2px);
}

.amc-service-card.amc-selected {
    border-color: var(--amc-primary);
    background: var(--amc-primary-light);
    box-shadow: 0 0 0 1px var(--amc-primary);
}

.dark .amc-service-card.amc-selected {
    background: rgba(102, 126, 234, 0.15);
}

.amc-service-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
    gap: 12px;
}

.amc-service-card h4 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--amc-gray-800);
}

.amc-service-card__price {
    font-size: 16px;
    font-weight: 700;
    color: var(--amc-primary);
    white-space: nowrap;
}

.amc-service-card__desc {
    margin: 0 0 12px;
    font-size: 13px;
    color: var(--amc-gray-500);
    line-height: 1.5;
}

.amc-service-card__meta {
    display: flex;
    gap: 16px;
}

.amc-service-card__duration {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--amc-gray-400);
}

/* --- Coordinator Cards --- */
.amc-coordinator-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.amc-coordinator-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border: 2px solid var(--amc-gray-200);
    border-radius: var(--amc-radius-sm);
    cursor: pointer;
    transition: var(--amc-transition);
    background: #fff;
}

.dark .amc-coordinator-card {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
}

.amc-coordinator-card:hover {
    border-color: var(--amc-primary);
    box-shadow: var(--amc-shadow-sm);
}

.amc-coordinator-card.amc-selected {
    border-color: var(--amc-primary);
    background: var(--amc-primary-light);
}

.dark .amc-coordinator-card.amc-selected {
    background: rgba(102, 126, 234, 0.15);
}

.amc-coordinator-card__avatar {
    flex-shrink: 0;
}

.amc-coord-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.amc-coord-avatar--fallback {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    background: var(--amc-gradient);
}

.amc-coordinator-card__info h4 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--amc-gray-800);
}

.amc-coordinator-card__designation {
    margin: 2px 0 0;
    font-size: 12px;
    color: var(--amc-gray-400);
}

/* --- Calendar --- */
.amc-date-picker {
    max-width: 400px;
}

.amc-date-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.amc-date-nav__btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--amc-gray-200);
    border-radius: var(--amc-radius-sm);
    background: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--amc-gray-600);
    transition: var(--amc-transition);
}

.dark .amc-date-nav__btn {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
    color: var(--amc-gray-300);
}

.amc-date-nav__btn:hover {
    border-color: var(--amc-primary);
    color: var(--amc-primary);
}

.amc-date-nav__label {
    font-size: 15px;
    font-weight: 600;
    color: var(--amc-gray-700);
}

.amc-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.amc-calendar__header {
    text-align: center;
    font-size: 11px;
    font-weight: 600;
    color: var(--amc-gray-400);
    padding: 8px 0;
    text-transform: uppercase;
}

.amc-calendar__day {
    text-align: center;
    padding: 10px 4px;
    border-radius: var(--amc-radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--amc-transition);
    color: var(--amc-gray-700);
    background: transparent;
    border: none;
}

.dark .amc-calendar__day {
    color: var(--amc-gray-300);
}

.amc-calendar__day:hover:not(.amc-disabled):not(.amc-selected) {
    background: var(--amc-gray-100);
}

.dark .amc-calendar__day:hover:not(.amc-disabled):not(.amc-selected) {
    background: var(--amc-gray-200);
}

.amc-calendar__day.amc-disabled {
    color: var(--amc-gray-300);
    cursor: not-allowed;
    opacity: 0.5;
}

.dark .amc-calendar__day.amc-disabled {
    color: var(--amc-gray-600);
}

.amc-calendar__day.amc-selected {
    background: var(--amc-gradient);
    color: #fff;
    font-weight: 600;
}

.amc-calendar__day.amc-today {
    border: 2px solid var(--amc-primary);
    font-weight: 600;
}

/* --- Time Slots --- */
.amc-time-slots {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 8px;
}

.amc-time-slot {
    padding: 10px 8px;
    text-align: center;
    border: 2px solid var(--amc-gray-200);
    border-radius: var(--amc-radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--amc-transition);
    background: #fff;
    color: var(--amc-gray-700);
}

.dark .amc-time-slot {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
    color: var(--amc-gray-300);
}

.amc-time-slot:hover:not(.amc-booked) {
    border-color: var(--amc-primary);
    color: var(--amc-primary);
}

.amc-time-slot.amc-selected {
    background: var(--amc-gradient);
    border-color: transparent;
    color: #fff;
}

.amc-time-slot.amc-booked {
    opacity: 0.4;
    cursor: not-allowed;
    text-decoration: line-through;
}

.amc-loading {
    text-align: center;
    color: var(--amc-gray-400);
    padding: 20px;
    font-size: 14px;
}

/* --- Coupon --- */
.amc-coupon-form {
    max-width: 400px;
}

.amc-input-group {
    display: flex;
    gap: 8px;
}

.amc-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--amc-gray-200);
    border-radius: var(--amc-radius-sm);
    font-size: 14px;
    color: var(--amc-gray-800);
    background: #fff;
    transition: var(--amc-transition);
    font-family: inherit;
}

.dark .amc-input {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
    color: var(--amc-gray-200);
}

.amc-input:focus {
    outline: none;
    border-color: var(--amc-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.amc-textarea {
    resize: vertical;
    min-height: 80px;
}

#amcCouponMessage {
    margin-top: 8px;
    font-size: 13px;
    font-weight: 500;
}

#amcCouponMessage.amc-coupon-valid {
    color: var(--amc-success);
}

#amcCouponMessage.amc-coupon-invalid {
    color: var(--amc-danger);
}

/* --- Buttons --- */
.amc-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--amc-radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--amc-transition);
    font-family: inherit;
    text-decoration: none;
    white-space: nowrap;
}

.amc-button--primary {
    background: var(--amc-gradient);
    color: #fff;
    box-shadow: var(--amc-shadow-sm);
}

.amc-button--primary:hover {
    background: var(--amc-gradient-hover);
    box-shadow: var(--amc-shadow-md);
    transform: translateY(-1px);
}

.amc-button--primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.amc-button--outline {
    background: transparent;
    color: var(--amc-primary);
    border: 1px solid var(--amc-primary);
}

.amc-button--outline:hover {
    background: var(--amc-primary);
    color: #fff;
}

.amc-button--ghost {
    background: transparent;
    color: var(--amc-gray-500);
    padding: 8px 12px;
}

.amc-button--ghost:hover {
    color: var(--amc-primary);
    background: var(--amc-gray-50);
}

.dark .amc-button--ghost:hover {
    background: var(--amc-gray-100);
}

.amc-button--large {
    padding: 14px 28px;
    font-size: 16px;
    width: 100%;
}

.amc-booking-back {
    margin-top: 8px;
}

/* --- Invoice Card --- */
.amc-invoice-card {
    background: #fff;
    border: 1px solid var(--amc-gray-200);
    border-radius: var(--amc-radius-lg);
    overflow: hidden;
    box-shadow: var(--amc-shadow-lg);
    position: sticky;
    top: 24px;
}

.dark .amc-invoice-card {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
}

.amc-invoice-card h3 {
    margin: 0;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    background: var(--amc-gradient);
    color: #fff;
}

.amc-invoice-body {
    padding: 20px 24px;
}

.amc-invoice-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 14px;
}

.amc-invoice-line--placeholder span {
    color: var(--amc-gray-400);
    font-style: italic;
}

.amc-invoice-label {
    color: var(--amc-gray-500);
    font-weight: 500;
}

.amc-invoice-value {
    color: var(--amc-gray-800);
    font-weight: 600;
}

.dark .amc-invoice-value {
    color: var(--amc-gray-200);
}

.amc-invoice-value--discount {
    color: var(--amc-success);
}

.amc-invoice-value--total {
    font-size: 20px;
    font-weight: 700;
    color: var(--amc-primary);
}

.amc-invoice-divider {
    height: 1px;
    background: var(--amc-gray-200);
    margin: 8px 0;
}

.dark .amc-invoice-divider {
    background: var(--amc-gray-300);
}

.amc-invoice-footer {
    padding: 16px 24px;
    background: var(--amc-gray-50);
    border-top: 1px solid var(--amc-gray-200);
}

.dark .amc-invoice-footer {
    background: var(--amc-gray-200);
    border-color: var(--amc-gray-300);
}

.amc-insecure-note {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    font-size: 12px;
    color: var(--amc-gray-400);
}

/* --- Help Card --- */
.amc-help-card {
    margin-top: 16px;
    padding: 16px 20px;
    background: var(--amc-gray-50);
    border: 1px solid var(--amc-gray-200);
    border-radius: var(--amc-radius);
    text-align: center;
}

.dark .amc-help-card {
    background: var(--amc-gray-100);
    border-color: var(--amc-gray-300);
}

.amc-help-card h4 {
    margin: 0 0 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--amc-gray-700);
}

.amc-help-card p {
    margin: 0;
    font-size: 13px;
    color: var(--amc-gray-500);
}

.amc-help-card a {
    color: var(--amc-primary);
    text-decoration: none;
    font-weight: 500;
}

.amc-help-card a:hover {
    text-decoration: underline;
}

/* --- Empty State --- */
.amc-empty-state {
    text-align: center;
    color: var(--amc-gray-400);
    padding: 24px;
    font-size: 14px;
}

/* --- Responsive --- */
@media (max-width: 600px) {
    .amc-booking-container {
        padding: 16px;
    }
    .amc-booking-form h2 {
        font-size: 22px;
    }
    .amc-booking-step {
        padding: 16px;
    }
    .amc-service-grid {
        grid-template-columns: 1fr;
    }
    .amc-coordinator-list {
        grid-template-columns: 1fr;
    }
    .amc-time-slots {
        grid-template-columns: repeat(3, 1fr);
    }
}