/* ============================================================
   PsychoBerlin – M3 Components
   ============================================================ */

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 24px;
    font-family: var(--md-sys-typescale-font-family);
    font-size: var(--md-sys-typescale-label-large-size);
    font-weight: var(--md-sys-typescale-label-large-weight);
    letter-spacing: var(--md-sys-typescale-label-large-tracking);
    line-height: 1.43;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
    min-height: 44px;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn:hover { text-decoration: none; }

.btn:focus-visible {
    outline: 2px solid var(--md-sys-color-accent);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--md-sys-color-accent);
    color: var(--md-sys-color-on-accent);
}

.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: var(--md-sys-elevation-1);
}

.btn-accent {
    background-color: var(--md-sys-color-accent);
    color: var(--md-sys-color-on-accent);
}

.btn-accent:hover {
    filter: brightness(1.1);
    box-shadow: var(--md-sys-elevation-1);
}

.btn-secondary {
    background-color: transparent;
    color: var(--md-sys-color-primary);
    border: 1px solid var(--md-sys-color-outline);
}

.btn-secondary:hover {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
}

.btn-text {
    background-color: transparent;
    color: var(--md-sys-color-primary);
    padding: 10px 12px;
}

.btn-text:hover {
    background-color: var(--md-sys-color-primary-container);
}

.btn-tonal {
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
}

.btn-tonal:hover {
    box-shadow: var(--md-sys-elevation-1);
}

.btn-error {
    background-color: var(--md-sys-color-error);
    color: var(--md-sys-color-on-error);
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--md-sys-typescale-label-medium-size);
    min-height: 36px;
}

.btn-lg {
    padding: 14px 32px;
    font-size: var(--md-sys-typescale-body-large-size);
    min-height: 48px;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 10px;
    border-radius: var(--md-sys-shape-corner-full);
}

.btn .material-symbols-outlined {
    font-size: 18px;
}

/* ── FAB (Floating Action Button) ───────────────────────────── */
.fab {
    position: fixed;
    bottom: 88px; /* über Mobile Nav */
    right: var(--spacing-md);
    width: 56px;
    height: 56px;
    border-radius: var(--md-sys-shape-corner-large);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border: none;
    cursor: pointer;
    box-shadow: var(--md-sys-elevation-3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
    z-index: var(--z-fixed);
}

.fab:hover {
    box-shadow: var(--md-sys-elevation-4);
}

@media (min-width: 905px) {
    .fab { bottom: var(--spacing-lg); }
}

.crisis-fab {
    position: fixed;
    bottom: 88px;
    right: var(--spacing-md);
    width: 56px;
    height: 56px;
    border-radius: var(--md-sys-shape-corner-large);
    background-color: var(--md-sys-color-accent);
    color: var(--md-sys-color-on-accent);
    border: none;
    cursor: pointer;
    box-shadow: var(--md-sys-elevation-3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard),
                transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
    z-index: var(--z-fixed);
    text-decoration: none;
}

.crisis-fab:hover {
    box-shadow: var(--md-sys-elevation-4);
    transform: scale(1.05);
    color: var(--md-sys-color-on-accent);
    text-decoration: none;
}

@media (min-width: 905px) {
    .crisis-fab { bottom: var(--spacing-lg); }
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
    background-color: var(--md-sys-color-surface-container);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: var(--spacing-md);
    transition: box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
    border: 1px solid var(--md-sys-color-outline);
}

.card-elevated {
    border: none;
    box-shadow: var(--md-sys-elevation-1);
}

.card-elevated:hover {
    box-shadow: var(--md-sys-elevation-2);
}

.card-filled {
    background-color: var(--md-sys-color-surface-container-highest);
    border: none;
}

.card-clickable {
    cursor: pointer;
}

.card-clickable:hover {
    box-shadow: var(--md-sys-elevation-2);
}

.card-clickable a {
    color: inherit;
    text-decoration: none;
}

.card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--md-sys-typescale-title-large-size);
    font-weight: var(--md-sys-typescale-title-large-weight);
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    font-size: var(--md-sys-typescale-body-medium-size);
    color: var(--md-sys-color-on-surface-variant);
}

.card-body {
    margin-bottom: var(--spacing-md);
}

.card-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ── Chips ──────────────────────────────────────────────────── */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 16px;
    font-size: var(--md-sys-typescale-label-large-size);
    font-weight: var(--md-sys-typescale-label-large-weight);
    border-radius: var(--md-sys-shape-corner-small);
    border: 1px solid var(--md-sys-color-outline);
    background: transparent;
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
    white-space: nowrap;
    text-decoration: none;
    min-height: 32px;
}

.chip:hover {
    background-color: var(--md-sys-color-surface-container-high);
    text-decoration: none;
    color: var(--md-sys-color-on-surface);
}

.chip.active, .chip[aria-selected="true"],
.chip:checked + label {
    background-color: var(--md-sys-color-accent);
    color: var(--md-sys-color-on-accent);
    border-color: transparent;
}

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.chip .material-symbols-outlined {
    font-size: 18px;
}

/* ── Search Bar ─────────────────────────────────────────────── */
.search-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--md-sys-shape-corner-extra-large);
    padding: 4px 16px;
    min-height: 56px;
    transition: box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.search-bar:focus-within {
    box-shadow: var(--md-sys-elevation-2);
    background-color: var(--md-sys-color-surface-container);
}

.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: var(--md-sys-typescale-body-large-size);
    color: var(--md-sys-color-on-surface);
    outline: none;
    min-width: 0;
}

.search-bar input::placeholder {
    color: var(--md-sys-color-on-surface-variant);
}

.search-bar .material-symbols-outlined {
    color: var(--md-sys-color-on-surface-variant);
    font-size: 24px;
}

/* ── Form Elements ──────────────────────────────────────────── */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: var(--md-sys-typescale-body-medium-size);
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--spacing-xs);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--md-sys-typescale-font-family);
    font-size: var(--md-sys-typescale-body-large-size);
    color: var(--md-sys-color-on-surface);
    background-color: var(--md-sys-color-surface-container);
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-small);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    min-height: 44px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--md-sys-color-accent);
    box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.1);
}

.form-input.error, .form-select.error, .form-textarea.error {
    border-color: var(--md-sys-color-error);
}

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

.form-helper {
    font-size: var(--md-sys-typescale-body-small-size);
    color: var(--md-sys-color-on-surface-variant);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: var(--md-sys-typescale-body-small-size);
    color: var(--md-sys-color-error);
    margin-top: var(--spacing-xs);
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    font-size: var(--md-sys-typescale-label-small-size);
    font-weight: var(--md-sys-typescale-label-small-weight);
    border-radius: var(--md-sys-shape-corner-full);
    white-space: nowrap;
}

.badge-success {
    background-color: var(--md-sys-color-success-container);
    color: var(--md-sys-color-success);
}

.badge-warning {
    background-color: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
}

.badge-error {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-error);
}

.badge-neutral {
    background-color: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
}

.badge-verified {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
}

/* ── Snackbar ───────────────────────────────────────────────── */
.snackbar {
    position: fixed;
    bottom: 88px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--md-sys-color-inverse-surface);
    color: var(--md-sys-color-inverse-on-surface);
    padding: 14px 24px;
    border-radius: var(--md-sys-shape-corner-extra-small);
    box-shadow: var(--md-sys-elevation-3);
    font-size: var(--md-sys-typescale-body-medium-size);
    z-index: var(--z-snackbar);
    opacity: 0;
    transition: all var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
    max-width: calc(100vw - 32px);
}

.snackbar.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

@media (min-width: 905px) {
    .snackbar { bottom: var(--spacing-lg); }
}

/* ── Dialog / Modal ─────────────────────────────────────────── */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: var(--md-sys-color-scrim);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}

.modal-backdrop.show,
.modal-backdrop.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background-color: var(--md-sys-color-surface-container-highest);
    border-radius: var(--md-sys-shape-corner-extra-large);
    padding: var(--spacing-lg);
    z-index: var(--z-modal);
    max-width: 560px;
    width: calc(100vw - 32px);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: all var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
}

.modal.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-title {
    font-size: var(--md-sys-typescale-headline-small-size);
    margin-bottom: var(--spacing-md);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

/* ── Avatar ─────────────────────────────────────────────────── */
.avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--md-sys-shape-corner-full);
    object-fit: cover;
    background-color: var(--md-sys-color-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--md-sys-color-on-primary-container);
    font-weight: 500;
    flex-shrink: 0;
}

.avatar-sm { width: 40px; height: 40px; }
.avatar-lg { width: 80px; height: 80px; }

/* ── Divider ────────────────────────────────────────────────── */
.divider {
    border: none;
    border-top: 1px solid var(--md-sys-color-outline);
    margin: var(--spacing-md) 0;
}

/* ── Skeleton (Loading Placeholder) ─────────────────────────── */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--md-sys-color-surface-container-high) 25%,
        var(--md-sys-color-surface-container-highest) 50%,
        var(--md-sys-color-surface-container-high) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--md-sys-shape-corner-small);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text { height: 16px; margin-bottom: var(--spacing-sm); }
.skeleton-title { height: 24px; width: 60%; margin-bottom: var(--spacing-md); }
.skeleton-avatar { width: 56px; height: 56px; border-radius: 50%; }
.skeleton-card { height: 200px; }

/* ── Progress / Stepper ─────────────────────────────────────── */
.stepper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.stepper-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.stepper-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--md-sys-typescale-label-large-size);
    font-weight: 600;
    background-color: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
    flex-shrink: 0;
}

.stepper-step.active .stepper-circle {
    background-color: var(--md-sys-color-accent);
    color: var(--md-sys-color-on-accent);
}

.stepper-step.completed .stepper-circle {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.stepper-label {
    font-size: var(--md-sys-typescale-label-large-size);
    color: var(--md-sys-color-on-surface-variant);
    display: none;
}

@media (min-width: 600px) {
    .stepper-label { display: block; }
}

.stepper-line {
    flex: 1;
    height: 2px;
    background-color: var(--md-sys-color-outline);
    min-width: 20px;
}

.stepper-step.completed + .stepper-line,
.stepper-step.active + .stepper-line {
    background-color: var(--md-sys-color-primary);
}

/* ── Pagination ─────────────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-xl) 0;
}

.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 8px;
    border-radius: var(--md-sys-shape-corner-full);
    font-size: var(--md-sys-typescale-body-medium-size);
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
    transition: background-color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.pagination a:hover {
    background-color: var(--md-sys-color-surface-container-high);
    text-decoration: none;
}

.pagination .active {
    background-color: var(--md-sys-color-accent);
    color: var(--md-sys-color-on-accent);
}

.pagination .disabled {
    color: var(--md-sys-color-outline-variant);
    pointer-events: none;
}

/* ── PWA Install Banner ────────────────────────────────────── */
.pwa-install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--md-sys-color-surface);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transform: translateY(100%);
    animation: pwa-slide-up 0.4s ease forwards;
}

@keyframes pwa-slide-up {
    to { transform: translateY(0); }
}

.pwa-install-banner .pwa-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--md-sys-color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--md-sys-color-on-accent);
    flex-shrink: 0;
}

.pwa-install-banner .pwa-text {
    flex: 1;
}

.pwa-install-banner .pwa-text h4 {
    margin: 0;
    font-size: 0.95rem;
}

.pwa-install-banner .pwa-text p {
    margin: 0.25rem 0 0;
    font-size: 0.8rem;
    color: var(--md-sys-color-on-surface-variant);
}

.pwa-install-banner .pwa-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* ── Swipe Hint ────────────────────────────────────────────── */
.swipe-hint {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    animation: swipe-hint-fade 3s ease forwards;
    pointer-events: none;
    z-index: 100;
    white-space: nowrap;
}

@keyframes swipe-hint-fade {
    0%, 70% { opacity: 1; }
    100% { opacity: 0; }
}

/* ── Offline Indicator ─────────────────────────────────────── */
.offline-indicator {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: var(--md-sys-color-error);
    color: var(--md-sys-color-on-error);
    text-align: center;
    padding: 0.25rem;
    font-size: 0.8rem;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.offline-indicator.visible {
    transform: translateY(0);
}

/* ── Form Hint ─────────────────────────────────────────────── */
.form-hint {
    color: var(--md-sys-color-on-surface-variant);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* ── Toggle Switch ─────────────────────────────────────────── */
.toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    gap: 0.5rem;
}

.toggle input {
    appearance: none;
    -webkit-appearance: none;
    width: 48px;
    height: 24px;
    background: var(--md-sys-color-surface-container-high);
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
    border: none;
    flex-shrink: 0;
}

.toggle input::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle input:checked {
    background: var(--md-sys-color-accent);
}

.toggle input:checked::after {
    transform: translateX(24px);
}

.toggle input:focus-visible {
    outline: 2px solid var(--md-sys-color-accent);
    outline-offset: 2px;
}

/* ── Tabs ──────────────────────────────────────────────────── */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--md-sys-color-surface-container-high);
    gap: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab {
    padding: 0.75rem 1.25rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--md-sys-color-on-surface-variant);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: color 0.2s, border-color 0.2s;
    min-height: 44px;
}

.tab:hover {
    color: var(--md-sys-color-on-surface);
}

.tab.active {
    color: var(--md-sys-color-accent);
    border-bottom-color: var(--md-sys-color-accent);
    font-weight: 500;
}

.tab:focus-visible {
    outline: 2px solid var(--md-sys-color-accent);
    outline-offset: -2px;
}

/* ── Modal Header & Close ──────────────────────────────────── */
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.modal-header h3 { margin: 0; }

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--md-sys-color-on-surface-variant);
    padding: 0.25rem;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--md-sys-shape-corner-full);
    transition: background-color 0.2s;
}

.modal-close:hover {
    background-color: var(--md-sys-color-surface-container-high);
}

.modal-close:focus-visible {
    outline: 2px solid var(--md-sys-color-accent);
    outline-offset: 2px;
}

/* ── Empty State ───────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--md-sys-color-on-surface-variant);
}

.empty-state .material-symbols-outlined {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    margin: 0 0 0.5rem;
    font-weight: 500;
}

.empty-state p {
    margin: 0 0 1.5rem;
}

/* ── Danger Zone ───────────────────────────────────────────── */
.danger-zone {
    border: 2px solid var(--md-sys-color-error);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 1.5rem;
    margin-top: 2rem;
}

.danger-zone h3 {
    color: var(--md-sys-color-error);
    margin-top: 0;
}

/* ── Stat Card ─────────────────────────────────────────────── */
.stat-card {
    background: var(--md-sys-color-surface-container);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 1.25rem;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--md-sys-color-accent);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 0.25rem;
}

/* ── Breadcrumb (alternate) ────────────────────────────────── */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--md-sys-color-on-surface-variant);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--md-sys-color-accent);
}

.breadcrumb .separator {
    opacity: 0.5;
}