/**
 * TAR Modal System v3
 * Architecture: Footer ALWAYS outside step containers
 * Modern Trust Design System - Trusted Advisors Realty AG
 *
 * @version 3.0.0
 * @date February 2026
 */

/* ===========================================
   DESIGN TOKENS
   =========================================== */
:root {
    /* Modal Tokens */
    --modal-width-sm: 480px;
    --modal-width-md: 560px;
    --modal-width-lg: 660px;
    --modal-radius: 2px;
    --modal-shadow: 0 25px 80px rgb(0 0 0 / 35%);
    --modal-backdrop: rgb(61 57 55 / 72%);
    --modal-backdrop-blur: 4px;

    /* Modal Spacing - Desktop */
    --modal-sp-header-x: 52px;
    --modal-sp-header-y: 44px;
    --modal-sp-body-x: 52px;
    --modal-sp-body-y: 36px;
    --modal-sp-footer-x: 52px;
    --modal-sp-footer-y: 22px;

    /* Transitions */
    --modal-ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --modal-duration: 200ms;
}

/* ===========================================
   MODAL OVERLAY (v3)
   =========================================== */
.tar-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--modal-backdrop);
    backdrop-filter: blur(var(--modal-backdrop-blur));
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 250ms var(--modal-ease),
        visibility 250ms var(--modal-ease);
}

.tar-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.tar-overlay.is-open .tar-modal-v3 {
    transform: translateY(0);
    opacity: 1;
}

/* ===========================================
   MODAL CONTAINER (v3)
   Architecture: header | body (scrollable) | footer (ALWAYS visible)
   Footer is NEVER inside a step container.
   =========================================== */
.tar-modal-v3 {
    background: var(--tar-alpine-white, #fff);
    border-radius: var(--modal-radius);
    box-shadow: var(--modal-shadow);
    display: flex;
    flex-direction: column;
    max-height: 88dvh;
    width: 100%;
    overflow: hidden;
    transform: translateY(12px);
    opacity: 0;
    transition:
        transform 300ms var(--modal-ease),
        opacity 300ms var(--modal-ease);
}

/* Size variants */
.tar-modal-v3--sm {
    max-width: var(--modal-width-sm);
}

.tar-modal-v3--md {
    max-width: var(--modal-width-md);
}

.tar-modal-v3--lg {
    max-width: var(--modal-width-lg);
}

/* ===========================================
   MODAL HEADER (v3)
   =========================================== */
.tar-modal-v3__header {
    padding: var(--modal-sp-header-y) var(--modal-sp-header-x) 0;
    position: relative;
    flex-shrink: 0;
}

/* Close Button */
.tar-modal-v3__close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border: none;
    background: transparent;
    color: var(--tar-gray-400, #9ca3af);
    font-size: 24px;
    font-weight: 300;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--modal-duration) var(--modal-ease);
    z-index: 2;
}

.tar-modal-v3__close:hover {
    color: var(--tar-graphite, #3d3937);
}

/* Badge */
.tar-modal-v3__badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--tar-brown-80, #73574a);
    margin-bottom: 16px;
}

.tar-modal-v3__badge::before {
    content: '';
    display: block;
    width: 20px;
    height: 1px;
    background: var(--tar-copper, #b8926a);
}

/* Title */
.tar-modal-v3__title {
    font-family: var(--font-primary, 'Jost', sans-serif);
    font-size: 25px;
    font-weight: 500;
    color: var(--tar-graphite, #3d3937);
    line-height: 1.3;
    margin: 0 0 8px;
    padding-right: 40px;
}

/* Subtitle */
.tar-modal-v3__subtitle {
    font-size: 14px;
    font-weight: 400;
    color: var(--tar-gray-500, #6b7280);
    line-height: 1.55;
    margin: 0;
}

/* Progress Bar (multi-step) */
.tar-modal-v3__progress {
    display: flex;
    align-items: center;
    gap: 0;
    margin-top: 32px;
}

.tar-modal-v3__progress-step {
    flex: 1;
    height: 2px;
    background: var(--tar-gray-200, #e5e7eb);
    transition: background var(--modal-duration) var(--modal-ease);
}

.tar-modal-v3__progress-step + .tar-modal-v3__progress-step {
    margin-left: 4px;
}

.tar-modal-v3__progress-step.is-active,
.tar-modal-v3__progress-step.is-done {
    background: var(--tar-brown-80, #73574a);
}

/* Progress Bar with Track + Labels (v3.2 enhanced) */
.tar-modal-v3__progress-track {
    flex: 1;
    height: 4px;
    background: var(--tar-gray-200, #e5e7eb);
    border-radius: 2px;
    overflow: hidden;
}

.tar-modal-v3__progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--tar-brown-80, #73574a), var(--tar-copper, #b8926a));
    transition: width var(--modal-duration, 200ms) var(--modal-ease, ease);
    border-radius: 2px;
}

.tar-modal-v3__progress-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
}

.tar-modal-v3__progress-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--tar-gray-400, #9ca3af);
    transition: color var(--modal-duration, 200ms) var(--modal-ease, ease);
}

.tar-modal-v3__progress-label.is-active {
    color: var(--tar-brown-80, #73574a);
    font-weight: 600;
}

.tar-modal-v3__progress-label.is-done {
    color: var(--tar-graphite, #3d3937);
}

/* Step Info Footer */
.tar-modal-v3__step-info {
    font-size: 12px;
    color: var(--tar-gray-500, #6b7280);
    font-weight: 500;
}

/* Single-step divider */
.tar-modal-v3__divider {
    height: 1px;
    background: var(--tar-gray-200, #e5e7eb);
    margin-top: 32px;
}

/* ===========================================
   MODAL BODY (scrollable zone)
   =========================================== */
.tar-modal-v3__body {
    flex: 1;
    overflow: hidden auto;
    padding: var(--modal-sp-body-y) var(--modal-sp-body-x);
    overscroll-behavior: contain;
    scrollbar-width: thin;
    scrollbar-color: var(--tar-gray-300, #d1d5db) transparent;
}

.tar-modal-v3__body::-webkit-scrollbar {
    width: 5px;
}

.tar-modal-v3__body::-webkit-scrollbar-track {
    background: transparent;
}

.tar-modal-v3__body::-webkit-scrollbar-thumb {
    background: var(--tar-gray-300, #d1d5db);
    border-radius: 3px;
}

/* Step visibility - ONLY controls body content */
.tar-step-v3 {
    display: none;
}

.tar-step-v3.is-active {
    display: block;
}

/* Fade transition for steps */
.tar-step-v3.is-active {
    animation: tarStepFadeIn 250ms var(--modal-ease) forwards;
}

@keyframes tarStepFadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section label */
.tar-section-label {
    display: block;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--tar-gray-400, #9ca3af);
    margin-bottom: 20px;
}

.tar-section-label:not(:first-child) {
    margin-top: 36px;
}

/* ===========================================
   PROPERTY TYPE CARDS
   =========================================== */
.tar-card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.tar-card-grid--3col {
    grid-template-columns: repeat(3, 1fr);
}

.tar-type-card {
    padding: 18px 10px;
    border: 1px solid var(--tar-gray-200, #e5e7eb);
    background: transparent;
    text-align: center;
    cursor: pointer;
    transition:
        border-color var(--modal-duration) var(--modal-ease),
        background var(--modal-duration) var(--modal-ease);
    font-family: inherit;
    outline: none;
}

.tar-type-card:hover {
    border-color: var(--tar-gray-400, #9ca3af);
    background: var(--tar-cream, #f7f5f2);
}

.tar-type-card.is-selected {
    border-color: var(--tar-brown-80, #73574a);
    background: var(--tar-cream, #f7f5f2);
}

.tar-type-card:focus-visible {
    outline: 2px solid var(--tar-brown-80, #73574a);
    outline-offset: 2px;
}

.tar-type-card__label {
    font-size: 13px;
    font-weight: 500;
    color: var(--tar-graphite, #3d3937);
    letter-spacing: 0.01em;
}

/* ===========================================
   FORM ELEMENTS
   =========================================== */
.tar-form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.tar-form-row--3col {
    grid-template-columns: repeat(3, 1fr);
}

.tar-field {
    margin-bottom: 22px;
}

.tar-field:last-child {
    margin-bottom: 0;
}

.tar-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--tar-graphite, #3d3937);
    margin-bottom: 7px;
    letter-spacing: 0.01em;
}

.tar-label__req {
    color: var(--tar-brown-80, #73574a);
    margin-left: 2px;
}

.tar-input,
.tar-select,
.tar-textarea {
    width: 100%;
    height: 46px;
    padding: 0 15px;
    font-size: 14px;
    font-family: inherit;
    color: var(--tar-graphite, #3d3937);
    background: var(--tar-alpine-white, #fff);
    border: 1px solid var(--tar-gray-300, #d1d5db);
    border-radius: 0;
    transition: border-color var(--modal-duration) var(--modal-ease);
}

.tar-input:hover,
.tar-select:hover,
.tar-textarea:hover {
    border-color: var(--tar-gray-400, #9ca3af);
}

.tar-input:focus,
.tar-select:focus,
.tar-textarea:focus {
    outline: none;
    border-color: var(--tar-brown-80, #73574a);
}

.tar-input::placeholder {
    color: var(--tar-gray-400, #9ca3af);
    font-weight: 400;
}

/* Error States (for form validation) */
.tar-input--error,
.tar-select--error,
.tar-textarea--error {
    border-color: #ef4444;
    background-color: #fef2f2;
}

.tar-checkbox--error {
    border-color: #ef4444;
}

.tar-textarea {
    height: auto;
    min-height: 100px;
    padding: 12px 15px;
    resize: vertical;
    line-height: 1.5;
}

.tar-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    padding-right: 40px;
    cursor: pointer;
}

/* Checkbox */
.tar-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    margin-top: 8px;
}

.tar-checkbox input[type='checkbox'] {
    width: 16px;
    height: 16px;
    margin-top: 2px;
    accent-color: var(--tar-brown-80, #73574a);
    flex-shrink: 0;
}

.tar-checkbox__text {
    font-size: 12px;
    color: var(--tar-gray-500, #6b7280);
    line-height: 1.5;
}

.tar-checkbox__text a {
    color: var(--tar-brown-80, #73574a);
    text-decoration: none;
}

.tar-checkbox__text a:hover {
    text-decoration: underline;
}

/* ===========================================
   MODAL FOOTER - ALWAYS VISIBLE
   This is the critical architectural element.
   Footer lives OUTSIDE any step container.
   =========================================== */
.tar-modal-v3__footer {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--modal-sp-footer-y) var(--modal-sp-footer-x);
    background: var(--tar-cream, #f7f5f2);
    border-top: 1px solid var(--tar-gray-200, #e5e7eb);
    gap: 16px;
}

.tar-modal-v3__ssl {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 10px;
    color: var(--tar-gray-500, #6b7280);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.tar-modal-v3__ssl svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    color: var(--tar-gray-400, #9ca3af);
}

.tar-modal-v3__actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
}

/* Ghost button */
.tar-btn-ghost {
    padding: 12px 20px;
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    color: var(--tar-gray-500, #6b7280);
    background: transparent;
    border: none;
    cursor: pointer;
    letter-spacing: 0.02em;
    transition: color var(--modal-duration) var(--modal-ease);
    white-space: nowrap;
}

.tar-btn-ghost:hover {
    color: var(--tar-graphite, #3d3937);
}

/* Primary button */
.tar-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 13px 28px;
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    letter-spacing: 0.03em;
    color: var(--tar-alpine-white, #fff);
    background: var(--tar-brown-80, #73574a);
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: background var(--modal-duration) var(--modal-ease);
    white-space: nowrap;
}

.tar-btn-primary:hover {
    background: var(--tar-brown-100, #5c4338);
}

.tar-btn-primary:focus-visible {
    outline: 2px solid var(--tar-brown-80, #73574a);
    outline-offset: 2px;
}

.tar-btn-primary svg {
    width: 14px;
    height: 14px;
}

/* Step indicator in footer */
.tar-modal-v3__step-info {
    font-size: 11px;
    color: var(--tar-gray-400, #9ca3af);
    letter-spacing: 0.02em;
}

/* ===========================================
   SUCCESS STATE
   =========================================== */
.tar-success {
    text-align: center;
    padding: 40px 20px;
}

.tar-success__icon {
    width: 48px;
    height: 48px;
    border: 2px solid var(--tar-brown-80, #73574a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--tar-brown-80, #73574a);
}

.tar-success__title {
    font-size: 22px;
    font-weight: 500;
    color: var(--tar-graphite, #3d3937);
    margin-bottom: 10px;
}

.tar-success__text {
    font-size: 14px;
    color: var(--tar-gray-500, #6b7280);
    line-height: 1.6;
    max-width: 360px;
    margin: 0 auto;
}

/* ===========================================
   RESPONSIVE: TABLET
   =========================================== */
@media (width <= 1024px) {
    :root {
        --modal-sp-header-x: 36px;
        --modal-sp-header-y: 36px;
        --modal-sp-body-x: 36px;
        --modal-sp-body-y: 28px;
        --modal-sp-footer-x: 36px;
    }

    .tar-modal-v3__title {
        font-size: 23px;
    }

    .tar-modal-v3__close {
        top: 16px;
        right: 16px;
    }
}

/* ===========================================
   RESPONSIVE: MOBILE
   =========================================== */
@media (width <= 767px) {
    .tar-overlay {
        padding: 0;
    }

    .tar-modal-v3 {
        max-width: 100% !important;
        max-height: 100dvh;
        height: 100%;
        border-radius: 0;
    }

    :root {
        --modal-sp-header-x: 24px;
        --modal-sp-header-y: 28px;
        --modal-sp-body-x: 24px;
        --modal-sp-body-y: 24px;
        --modal-sp-footer-x: 24px;
        --modal-sp-footer-y: 18px;
    }

    .tar-modal-v3__title {
        font-size: 21px;
    }

    .tar-modal-v3__subtitle {
        font-size: 13px;
    }

    .tar-modal-v3__close {
        top: 14px;
        right: 14px;
    }

    .tar-modal-v3__badge::before {
        width: 16px;
    }

    .tar-modal-v3__progress {
        margin-top: 24px;
    }

    .tar-modal-v3__divider {
        margin-top: 24px;
    }

    .tar-card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .tar-card-grid--3col {
        grid-template-columns: repeat(3, 1fr);
    }

    .tar-type-card {
        padding: 14px 8px;
    }

    .tar-type-card__label {
        font-size: 12px;
    }

    .tar-form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .tar-form-row--3col {
        grid-template-columns: 1fr;
    }

    .tar-modal-v3__footer {
        flex-direction: column;
        gap: 10px;
    }

    .tar-modal-v3__actions {
        width: 100%;
        flex-direction: column-reverse;
        gap: 6px;
        margin-left: 0;
    }

    .tar-btn-primary {
        width: 100%;
        justify-content: center;
        padding: 15px;
    }

    .tar-btn-ghost {
        width: 100%;
        text-align: center;
    }

    .tar-modal-v3__ssl {
        text-align: center;
        order: 1;
    }

    .tar-modal-v3__step-info {
        order: -1;
        text-align: center;
    }
}

/* ===========================================
   RESPONSIVE: SMALL MOBILE
   =========================================== */
@media (width <= 374px) {
    .tar-modal-v3__title {
        font-size: 19px;
    }

    .tar-type-card__label {
        font-size: 11px;
    }
}

/* ===========================================
   ACCESSIBILITY
   =========================================== */
@media (prefers-reduced-motion: reduce) {
    .tar-overlay,
    .tar-modal-v3,
    .tar-step-v3.is-active,
    .tar-type-card,
    .tar-input,
    .tar-select,
    .tar-textarea,
    .tar-btn-ghost,
    .tar-btn-primary,
    .tar-modal-v3__close {
        transition-duration: 0ms !important;
        animation-duration: 0ms !important;
    }
}

@media (prefers-contrast: high) {
    .tar-type-card,
    .tar-input,
    .tar-select,
    .tar-textarea {
        border-width: 2px;
    }
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ===========================================
   TOUCH TARGET FIXES (WCAG 2.1 AAA - 44x44px)
   =========================================== */
.tar-type-card {
    min-height: 44px;
}

.tar-btn-primary,
.tar-btn-ghost {
    min-height: 44px;
}

/* ===========================================
   iOS SCROLL MOMENTUM
   =========================================== */
.tar-modal-v3__body {
    -webkit-overflow-scrolling: touch;
}

/* ===========================================
   SAFE AREA SUPPORT (Notch Devices)
   =========================================== */
@supports (padding: max(0px)) {
    .tar-modal-v3 {
        padding-top: max(0px, env(safe-area-inset-top));
        padding-bottom: max(0px, env(safe-area-inset-bottom));
    }

    @media (width <= 767px) {
        .tar-modal-v3__footer {
            padding-bottom: max(18px, env(safe-area-inset-bottom));
        }
    }
}

/* ===========================================
   LANDSCAPE ORIENTATION
   =========================================== */
@media (orientation: landscape) and (height <= 600px) {
    .tar-modal-v3 {
        max-height: 95vh;
    }

    .tar-modal-v3__header {
        padding-top: 16px;
        padding-bottom: 8px;
    }

    .tar-modal-v3__title {
        font-size: 19px;
    }

    .tar-modal-v3__progress,
    .tar-modal-v3__divider {
        margin-top: 16px;
    }
}

/* ===========================================
   RESPONSIVE: LARGE MOBILE (640px)
   =========================================== */
@media (width <= 640px) {
    .tar-modal-v3__title {
        font-size: 20px;
    }

    .tar-section-label {
        margin-bottom: 16px;
    }

    .tar-section-label:not(:first-child) {
        margin-top: 28px;
    }

    .tar-field {
        margin-bottom: 18px;
    }
}

/* ===========================================
   RESPONSIVE: SMALL MOBILE (480px)
   =========================================== */
@media (width <= 480px) {
    .tar-type-card {
        padding: 14px 10px;
    }

    .tar-type-card__label {
        font-size: 12px;
    }

    .tar-modal-v3__title {
        font-size: 19px;
    }

    .tar-modal-v3__actions {
        flex-direction: column;
        gap: 8px;
    }

    .tar-btn-primary,
    .tar-btn-ghost {
        width: 100%;
        justify-content: center;
    }
}

/* ===========================================
   TOUCH DEVICE ENHANCEMENTS
   =========================================== */
@media (hover: none) {
    .tar-input:focus,
    .tar-select:focus,
    .tar-type-card:focus-visible {
        border-width: 2px;
        outline-offset: 1px;
    }

    .tar-type-card:active {
        transform: scale(0.98);
    }

    .tar-btn-primary:active,
    .tar-btn-ghost:active {
        transform: scale(0.98);
    }
}