/* ═══════════════════════════════════════════════════════════════════════════
   HW Member Kit — CSS
   A complete, themeable dark-mode stylesheet for the member system.
   Sites override variables in their own :root block.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Theme Variables ────────────────────────────────────────────────────── */

:root {
    --member-bg: #0f172a;
    --member-surface: #1e293b;
    --member-surface-hover: #334155;
    --member-border: #334155;
    --member-text: #f1f5f9;
    --member-text-muted: #94a3b8;
    --member-accent: #3b82f6;
    --member-accent-hover: #2563eb;
    --member-accent-text: #ffffff;
    --member-error: #ef4444;
    --member-success: #22c55e;
    --member-warning: #f59e0b;
    --member-info: #3b82f6;
    --member-radius: 0.5rem;
    --member-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
        Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
}

/* ── Reset & Base ───────────────────────────────────────────────────────── */

.member-page *,
.member-page *::before,
.member-page *::after {
    box-sizing: border-box;
}

/* ── Page Wrapper ───────────────────────────────────────────────────────── */

.member-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem 1rem;
    background: var(--member-bg);
    font-family: var(--member-font);
    color: var(--member-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Card ───────────────────────────────────────────────────────────────── */

.member-card {
    width: 100%;
    max-width: 480px;
    background: var(--member-surface);
    border: 1px solid var(--member-border);
    border-radius: var(--member-radius);
    box-shadow:
        0 4px 6px -1px rgba(0, 0, 0, 0.3),
        0 2px 4px -2px rgba(0, 0, 0, 0.2);
    padding: 2rem;
}

.member-card--wide {
    max-width: 640px;
}

/* ── Header ─────────────────────────────────────────────────────────────── */

.member-header {
    text-align: center;
    margin-bottom: 2rem;
}

.member-header h1,
.member-header h2 {
    margin: 0 0 0.25rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--member-text);
    letter-spacing: -0.01em;
}

.member-header p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--member-text-muted);
}

/* ── Form ───────────────────────────────────────────────────────────────── */

.member-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* ── Field ──────────────────────────────────────────────────────────────── */

.member-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

/* ── Label ──────────────────────────────────────────────────────────────── */

.member-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--member-text);
}

.member-label .member-label-required {
    color: var(--member-error);
    margin-left: 0.125rem;
}

/* ── Input ──────────────────────────────────────────────────────────────── */

.member-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    font-family: var(--member-font);
    color: var(--member-text);
    background: var(--member-bg);
    border: 1px solid var(--member-border);
    border-radius: var(--member-radius);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.member-input::placeholder {
    color: var(--member-text-muted);
    opacity: 0.6;
}

.member-input:focus {
    border-color: var(--member-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.member-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.member-input.member-input--error {
    border-color: var(--member-error);
}

.member-input.member-input--error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* ── Textarea ───────────────────────────────────────────────────────────── */

.member-textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    font-family: var(--member-font);
    color: var(--member-text);
    background: var(--member-bg);
    border: 1px solid var(--member-border);
    border-radius: var(--member-radius);
    outline: none;
    resize: vertical;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    line-height: 1.5;
}

.member-textarea::placeholder {
    color: var(--member-text-muted);
    opacity: 0.6;
}

.member-textarea:focus {
    border-color: var(--member-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* ── Password wrapper (for toggle visibility) ───────────────────────────── */

.member-password-wrap {
    position: relative;
}

.member-password-wrap .member-input {
    padding-right: 3rem;
}

.member-password-toggle {
    position: absolute;
    right: 0.625rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--member-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    font-size: 0.8125rem;
    font-family: var(--member-font);
    transition: color 0.2s ease;
}

.member-password-toggle:hover {
    color: var(--member-text);
}

/* ── Buttons ────────────────────────────────────────────────────────────── */

.member-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--member-font);
    color: var(--member-accent-text);
    background: var(--member-accent);
    border: 1px solid transparent;
    border-radius: var(--member-radius);
    cursor: pointer;
    outline: none;
    transition: background-color 0.2s ease, transform 0.1s ease,
        box-shadow 0.2s ease;
    text-decoration: none;
    line-height: 1.4;
}

.member-btn:hover {
    background: var(--member-accent-hover);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

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

.member-btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.4);
}

.member-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Spinner inside button when loading */
.member-btn .member-spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: member-spin 0.6s linear infinite;
}

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

/* ── Secondary Button ───────────────────────────────────────────────────── */

.member-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--member-font);
    color: var(--member-text);
    background: transparent;
    border: 1px solid var(--member-border);
    border-radius: var(--member-radius);
    cursor: pointer;
    outline: none;
    transition: background-color 0.2s ease, border-color 0.2s ease,
        transform 0.1s ease;
    text-decoration: none;
    line-height: 1.4;
}

.member-btn-secondary:hover {
    background: var(--member-surface-hover);
    border-color: var(--member-text-muted);
}

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

.member-btn-secondary:focus-visible {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.member-btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ── Danger Button ──────────────────────────────────────────────────────── */

.member-btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--member-font);
    color: #ffffff;
    background: var(--member-error);
    border: 1px solid transparent;
    border-radius: var(--member-radius);
    cursor: pointer;
    outline: none;
    transition: background-color 0.2s ease, transform 0.1s ease,
        box-shadow 0.2s ease;
    text-decoration: none;
    line-height: 1.4;
}

.member-btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

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

.member-btn-danger:focus-visible {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.4);
}

.member-btn-danger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ── Link ───────────────────────────────────────────────────────────────── */

.member-link {
    color: var(--member-accent);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    font-family: var(--member-font);
}

.member-link:hover {
    color: var(--member-accent-hover);
    text-decoration: underline;
}

/* ── Divider ("or") ─────────────────────────────────────────────────────── */

.member-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
}

.member-divider::before,
.member-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--member-border);
}

.member-divider span {
    font-size: 0.8125rem;
    color: var(--member-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

/* ── Social Button (Base Class) ────────────────────────────────────────── */

.member-social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--member-font);
    border-radius: var(--member-radius);
    cursor: pointer;
    outline: none;
    transition: all 0.2s ease;
    text-decoration: none;
    line-height: 1.4;
    border: 1px solid;
}

.member-social-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.member-social-btn:active {
    transform: translateY(0) scale(0.98);
}

.member-social-btn:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

.member-social-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ── SSO Button (inherits from member-social-btn) ─────────────────────── */

.member-sso-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    width: 100%;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 700;
    font-family: var(--member-font);
    color: #1a1a2e;
    background: linear-gradient(135deg, #f5d061 0%, #e6a817 50%, #d4a017 100%);
    border: 1px solid rgba(245, 208, 97, 0.3);
    border-radius: var(--member-radius);
    cursor: pointer;
    outline: none;
    transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
    text-decoration: none;
    line-height: 1.4;
    letter-spacing: 0.01em;
    box-shadow: 0 2px 10px rgba(245, 208, 97, 0.2);
}

.member-sso-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(245, 208, 97, 0.35);
    filter: brightness(1.05);
}

.member-sso-btn:active {
    transform: translateY(0) scale(0.98);
}

.member-sso-btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(245, 208, 97, 0.5);
}

.member-sso-btn .member-sso-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    border-radius: 3px;
    object-fit: contain;
}

/* ── Avatar ─────────────────────────────────────────────────────────────── */

.member-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    overflow: hidden;
    background: var(--member-surface-hover);
    color: var(--member-text-muted);
    font-weight: 600;
    flex-shrink: 0;
    border: 2px solid var(--member-border);
}

.member-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Small: 32px */
.member-avatar--sm {
    width: 2rem;
    height: 2rem;
    font-size: 0.75rem;
}

/* Medium: 64px (default) */
.member-avatar--md {
    width: 4rem;
    height: 4rem;
    font-size: 1.25rem;
}

/* Large: 96px */
.member-avatar--lg {
    width: 6rem;
    height: 6rem;
    font-size: 2rem;
}

/* ── Avatar Upload Area ─────────────────────────────────────────────────── */

.member-avatar-upload {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.5rem;
    border: 2px dashed var(--member-border);
    border-radius: var(--member-radius);
    background: var(--member-bg);
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
    text-align: center;
}

.member-avatar-upload:hover {
    border-color: var(--member-accent);
    background: rgba(59, 130, 246, 0.05);
}

.member-avatar-upload.member-avatar-upload--dragover {
    border-color: var(--member-accent);
    background: rgba(59, 130, 246, 0.1);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.member-avatar-upload .member-avatar-upload-text {
    font-size: 0.875rem;
    color: var(--member-text-muted);
}

.member-avatar-upload .member-avatar-upload-text strong {
    color: var(--member-accent);
}

.member-avatar-upload .member-avatar-upload-hint {
    font-size: 0.75rem;
    color: var(--member-text-muted);
    opacity: 0.7;
}

/* Preview thumbnail inside upload area */
.member-avatar-upload .member-avatar-preview {
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--member-border);
}

/* Hidden file input */
.member-avatar-upload input[type='file'] {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
    overflow: hidden;
}

/* ── Toast Notifications ────────────────────────────────────────────────── */

.member-toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
    max-width: 380px;
    width: calc(100% - 2rem);
}

.member-toast {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-radius: var(--member-radius);
    background: var(--member-surface);
    border: 1px solid var(--member-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    pointer-events: auto;
    animation: member-toast-in 0.3s ease forwards;
    font-size: 0.875rem;
    color: var(--member-text);
    line-height: 1.4;
}

.member-toast.member-toast--exit {
    animation: member-toast-out 0.25s ease forwards;
}

.member-toast--success {
    border-left: 3px solid var(--member-success);
}

.member-toast--error {
    border-left: 3px solid var(--member-error);
}

.member-toast--info {
    border-left: 3px solid var(--member-info);
}

.member-toast--warning {
    border-left: 3px solid var(--member-warning);
}

.member-toast-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.0625rem;
}

.member-toast--success .member-toast-icon {
    color: var(--member-success);
}

.member-toast--error .member-toast-icon {
    color: var(--member-error);
}

.member-toast--info .member-toast-icon {
    color: var(--member-info);
}

.member-toast--warning .member-toast-icon {
    color: var(--member-warning);
}

.member-toast-message {
    flex: 1;
    word-break: break-word;
}

.member-toast-close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--member-text-muted);
    cursor: pointer;
    padding: 0.125rem;
    font-size: 1rem;
    line-height: 1;
    transition: color 0.15s ease;
}

.member-toast-close:hover {
    color: var(--member-text);
}

@keyframes member-toast-in {
    from {
        opacity: 0;
        transform: translateX(1rem);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes member-toast-out {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(1rem);
    }
}

/* ── Toast Slide Animations ─────────────────────────────────────────────── */

@keyframes toast-slide-in {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toast-slide-out {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* ── Field Error Shake Animation ────────────────────────────────────────── */

@keyframes field-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    50% { transform: translateX(4px); }
    75% { transform: translateX(-4px); }
}

.member-field.error {
    animation: field-shake 0.4s ease-in-out;
}

.member-field.error .member-input,
.member-field.error .member-textarea {
    border-color: var(--member-error);
    background-color: rgba(239, 68, 68, 0.05);
}

/* ── Activity List ──────────────────────────────────────────────────────── */

.member-activity-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

.member-activity-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--member-border);
    transition: background-color 0.15s ease;
}

.member-activity-item:last-child {
    border-bottom: none;
}

.member-activity-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.member-activity-icon {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--member-surface-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: var(--member-text-muted);
    margin-top: 0.125rem;
}

.member-activity-content {
    flex: 1;
    min-width: 0;
}

.member-activity-text {
    font-size: 0.875rem;
    color: var(--member-text);
    margin: 0;
    line-height: 1.4;
}

.member-activity-time {
    font-size: 0.75rem;
    color: var(--member-text-muted);
    margin: 0.25rem 0 0;
}

/* ── Tabs ───────────────────────────────────────────────────────────────── */

.member-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--member-border);
    margin-bottom: 1.5rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.member-tabs::-webkit-scrollbar {
    display: none;
}

.member-tab {
    flex-shrink: 0;
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--member-font);
    color: var(--member-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    outline: none;
    transition: color 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
    margin-bottom: -1px;
}

.member-tab:hover {
    color: var(--member-text);
}

.member-tab.active {
    color: var(--member-accent);
    border-bottom-color: var(--member-accent);
}

.member-tab:focus-visible {
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3) inset;
    border-radius: 0.25rem 0.25rem 0 0;
}

/* Tab content panels */
.member-tab-content {
    display: none;
}

.member-tab-content.active {
    display: block;
    animation: member-tab-fade 0.2s ease;
}

@keyframes member-tab-fade {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Error & Success Text ───────────────────────────────────────────────── */

.member-error-text {
    font-size: 0.8125rem;
    color: var(--member-error);
    margin: 0;
    line-height: 1.4;
}

.member-success-text {
    font-size: 0.8125rem;
    color: var(--member-success);
    margin: 0;
    line-height: 1.4;
}

/* ── Alert Boxes ────────────────────────────────────────────────────────── */

.member-alert {
    padding: 0.875rem 1rem;
    border-radius: var(--member-radius);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.member-alert--error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.member-alert--success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #86efac;
}

.member-alert--info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}

/* ── Footer Links (below card) ──────────────────────────────────────────── */

.member-footer {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.875rem;
    color: var(--member-text-muted);
}

.member-footer a {
    color: var(--member-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.member-footer a:hover {
    color: var(--member-accent-hover);
    text-decoration: underline;
}

/* ── Utility: Profile Layout ────────────────────────────────────────────── */

.member-profile-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.member-profile-info {
    flex: 1;
    min-width: 0;
}

.member-profile-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--member-text);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.member-profile-email {
    font-size: 0.875rem;
    color: var(--member-text-muted);
    margin: 0.125rem 0 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.member-profile-meta {
    font-size: 0.75rem;
    color: var(--member-text-muted);
    margin: 0.375rem 0 0;
    opacity: 0.8;
}

/* ── Form Row (side-by-side fields) ─────────────────────────────────────── */

.member-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ── Section Heading Inside Card ────────────────────────────────────────── */

.member-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--member-text);
    margin: 0 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--member-border);
}

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 480px) {
    .member-page {
        padding: 1rem 0.75rem;
        justify-content: flex-start;
        padding-top: 2rem;
    }

    .member-card {
        padding: 1.5rem 1.25rem;
        border-radius: 0.75rem;
    }

    .member-header h1,
    .member-header h2 {
        font-size: 1.25rem;
    }

    .member-form-row {
        grid-template-columns: 1fr;
    }

    .member-profile-header {
        flex-direction: column;
        text-align: center;
    }

    .member-profile-name,
    .member-profile-email {
        text-align: center;
        white-space: normal;
    }

    .member-tabs {
        gap: 0;
    }

    .member-tab {
        padding: 0.625rem 0.875rem;
        font-size: 0.8125rem;
    }

    .member-toast-container {
        top: 0.5rem;
        right: 0.5rem;
        left: 0.5rem;
        max-width: none;
        width: auto;
    }
}

@media (max-width: 360px) {
    .member-card {
        padding: 1.25rem 1rem;
    }

    .member-btn,
    .member-btn-secondary,
    .member-btn-danger,
    .member-sso-btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }
}

/* ── Staggered Group Animations ──────────────────────────────────────────── */

@keyframes member-group-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.member-group {
    animation: member-group-fade-in 400ms ease-out;
    animation-fill-mode: both;
}

.member-group:nth-child(1) { --stagger-delay: 0ms; animation-delay: var(--stagger-delay); }
.member-group:nth-child(2) { --stagger-delay: 100ms; animation-delay: var(--stagger-delay); }
.member-group:nth-child(3) { --stagger-delay: 200ms; animation-delay: var(--stagger-delay); }
.member-group:nth-child(4) { --stagger-delay: 300ms; animation-delay: var(--stagger-delay); }
.member-group:nth-child(5) { --stagger-delay: 400ms; animation-delay: var(--stagger-delay); }

/* ── Divider Line Animation ──────────────────────────────────────────────── */

@keyframes member-divider-expand {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 100%;
        opacity: 1;
    }
}

.member-group-label::before,
.member-group-label::after {
    animation: member-divider-expand 600ms ease-out forwards;
}

.member-group-label::before {
    animation-delay: 150ms;
}

.member-group-label::after {
    animation-delay: 200ms;
}

/* ── Enhanced Button Hover States ────────────────────────────────────────── */

.member-wallet-btn:hover {
    transform: scale(1.02);
}

.member-google-btn:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

/* ── Input Focus Enhancements ───────────────────────────────────────────── */

.member-input:focus-visible {
    outline: 3px solid var(--member-accent);
    outline-offset: 2px;
}

.member-input {
    transition: border-color 0.2s ease, box-shadow 0.2s ease, outline 0.2s ease;
}

/* ── Helper Text Styling ────────────────────────────────────────────────── */

.member-form-helper {
    font-size: 0.8rem;
    color: var(--member-text-muted);
    margin-top: 0.25rem;
    line-height: 1.4;
}

.member-helper-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.375rem;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    color: var(--member-accent);
    font-size: 0.625rem;
    flex-shrink: 0;
}

/* ── Reduced Motion Support ────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── Dark Mode Detection ────────────────────────────────────────────────– */

@media (prefers-color-scheme: light) {
    :root {
        --member-bg: #f9fafb;
        --member-surface: #ffffff;
        --member-surface-hover: #f3f4f6;
        --member-border: #e5e7eb;
        --member-text: #1f2937;
        --member-text-muted: #6b7280;
    }

    .member-card {
        box-shadow:
            0 4px 6px -1px rgba(0, 0, 0, 0.05),
            0 2px 4px -2px rgba(0, 0, 0, 0.05);
    }

    .member-input,
    .member-textarea {
        background: #f9fafb;
    }

    .member-google-btn {
        background: #f9fafb;
        color: #3c4043;
        border-color: #dadce0;
    }

    .member-google-btn:hover {
        background: #f5f5f5;
    }

    .member-alert--error {
        background: rgba(239, 68, 68, 0.05);
        border-color: rgba(239, 68, 68, 0.2);
        color: #991b1b;
    }

    .member-alert--success {
        background: rgba(34, 197, 94, 0.05);
        border-color: rgba(34, 197, 94, 0.2);
        color: #15803d;
    }

    .member-alert--info {
        background: rgba(59, 130, 246, 0.05);
        border-color: rgba(59, 130, 246, 0.2);
        color: #1e40af;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --member-bg: #0f172a;
        --member-surface: #1e293b;
        --member-surface-hover: #334155;
        --member-border: #334155;
        --member-text: #f1f5f9;
        --member-text-muted: #94a3b8;
        --member-accent: #3b82f6;
        --member-accent-hover: #2563eb;
        --member-accent-text: #ffffff;
        --member-error: #ef4444;
        --member-success: #22c55e;
        --member-warning: #f59e0b;
        --member-info: #3b82f6;
    }

    .member-card {
        box-shadow:
            0 4px 6px -1px rgba(0, 0, 0, 0.3),
            0 2px 4px -2px rgba(0, 0, 0, 0.2);
    }

    .member-input,
    .member-textarea {
        background: var(--member-bg);
    }

    .member-google-btn {
        background: #ffffff;
        color: #1a1a1a;
        border-color: #dadce0;
    }

    .member-google-btn:hover {
        background: #f8f9fa;
        border-color: #c6c6c6;
    }

    .member-btn {
        background: var(--member-accent);
        color: var(--member-accent-text);
    }

    .member-btn:hover {
        background: var(--member-accent-hover);
    }

    .member-btn-secondary {
        color: var(--member-text);
        border-color: var(--member-border);
    }

    .member-btn-secondary:hover {
        background: var(--member-surface-hover);
    }

    .member-btn-danger {
        background: var(--member-error);
    }

    .member-btn-danger:hover {
        background: #dc2626;
    }

    .member-alert--error {
        background: rgba(239, 68, 68, 0.1);
        border-color: rgba(239, 68, 68, 0.3);
        color: #fca5a5;
    }

    .member-alert--success {
        background: rgba(34, 197, 94, 0.1);
        border-color: rgba(34, 197, 94, 0.3);
        color: #86efac;
    }

    .member-alert--info {
        background: rgba(59, 130, 246, 0.1);
        border-color: rgba(59, 130, 246, 0.3);
        color: #93c5fd;
    }
}

/* ── Print ──────────────────────────────────────────────────────────────── */

@media print {
    .member-page {
        background: #fff;
        color: #000;
    }

    .member-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .member-toast-container {
        display: none;
    }
}

/* ── Login Group Structure (Primary, Secondary, Tertiary) ──────────────── */

.member-group {
    margin-top: 1.25rem;
}

.member-group-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--member-text-muted);
    font-size: 0.8125rem;
    margin-bottom: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.member-group-label::before,
.member-group-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--member-border);
    transform-origin: center;
}

/* --- Social & Wallet Button Rows --- */

.member-social-btns,
.member-wallet-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
}

.member-social-btns > *,
.member-wallet-btns > * {
    flex: 1 1 calc(50% - 0.3125rem);
    min-width: 140px;
}

/* --- Unified Social Button --- */

.member-social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border: 1px solid;
    border-radius: var(--member-radius);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s, transform 0.15s;
}

.member-social-btn:hover {
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.member-social-btn:active {
    transform: translateY(0);
}

/* --- Google Button (white with border, extends social-btn) --- */

.member-google-btn {
    background: #fff;
    color: #3c4043;
    border-color: #dadce0;
}

.member-google-btn:hover {
    background: #f8f9fa;
    border-color: #c6c6c6;
}

/* --- Wallet Buttons (with provider-specific hover colors) --- */

.member-wallet-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: var(--member-surface);
    color: var(--member-text);
    border: 1px solid var(--member-border);
    border-radius: var(--member-radius);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.member-wallet-btn:hover {
    background: var(--member-surface-hover);
    border-color: var(--member-accent);
}

.member-wallet-btn[data-wallet="metamask"]:hover {
    border-color: #f6851b;
}

.member-wallet-btn[data-wallet="walletconnect"]:hover {
    border-color: #3b99fc;
}

.member-wallet-btn[data-wallet="coinbase"]:hover {
    border-color: #0052ff;
}

/* ── Nav Tabs (Login/Register/Reset switcher) ──────────────────────────── */

.member-nav-tabs {
    display: flex;
    border-bottom: 1px solid var(--member-border);
    margin: -0.5rem -0.5rem 1.5rem;
    gap: 0;
}

.member-nav-tab {
    flex: 1;
    text-align: center;
    padding: 0.75rem 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: var(--member-font);
    color: var(--member-text-muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
}

.member-nav-tab:hover {
    color: var(--member-text);
}

.member-nav-tab.active {
    color: var(--member-accent);
    border-bottom-color: var(--member-accent);
    font-weight: 600;
}

.member-nav-tab:focus-visible {
    outline: 2px solid var(--member-accent);
    outline-offset: -2px;
    border-radius: 0.25rem 0.25rem 0 0;
}

/* ── Sign Up CTA Banner ────────────────────────────────────────────────── */

.member-signup-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
    border-radius: var(--member-radius);
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.15);
    font-size: 0.875rem;
}

.member-signup-cta__text {
    color: var(--member-text-muted);
}

.member-signup-cta__link {
    color: var(--member-accent);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.member-signup-cta__link:hover {
    color: var(--member-accent-hover);
    text-decoration: underline;
}

/* ── Label Row (label + inline link) ───────────────────────────────────── */

.member-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.25rem;
}

.member-label-row .member-label {
    margin-bottom: 0;
}

.member-forgot-link {
    font-size: 0.8125rem;
    font-weight: 500;
}

/* ── Email Validation Indicator ────────────────────────────────────────── */

.member-input-wrap {
    position: relative;
}

.member-input-wrap .member-input {
    padding-right: 2.5rem;
}

.member-input-indicator {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.member-input-indicator.is-visible {
    opacity: 1;
}

.member-input-indicator--valid {
    color: var(--member-success);
}

.member-input-indicator--invalid {
    color: var(--member-error);
}

/* ── Context-Aware Error Banner ─────────────────────────────────────────── */

.member-context-error {
    animation: member-tab-fade 0.25s ease;
}

.member-context-error__actions {
    margin-top: 0.5rem;
    font-size: 0.8125rem;
}

.member-context-error__actions .member-link {
    font-weight: 600;
    text-decoration: underline;
}

.member-context-error__sep {
    color: var(--member-text-muted);
    opacity: 0.6;
}

/* ── Trust Badge ───────────────────────────────────────────────────────── */

.member-trust-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--member-text-muted);
    opacity: 0.7;
}

/* ── Password Strength Meter ───────────────────────────────────────────── */
.member-strength-container {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
}
.member-strength-bar {
    flex: 1;
    height: 4px;
    background: var(--member-border, #333);
    border-radius: 2px;
    overflow: hidden;
}
.member-strength-fill {
    height: 100%;
    width: 0;
    border-radius: 2px;
    transition: width 0.3s ease, background-color 0.3s ease;
}
.member-strength-fill.strength-weak { background-color: #ef4444; }
.member-strength-fill.strength-medium { background-color: #eab308; }
.member-strength-fill.strength-strong { background-color: #22c55e; }
.member-strength-label {
    font-size: 11px;
    min-width: 70px;
    color: var(--member-muted, #888);
}
.member-strength-label.strength-weak { color: #ef4444; }
.member-strength-label.strength-medium { color: #eab308; }
.member-strength-label.strength-strong { color: #22c55e; }

/* ── Dark Mode Media Query ──────────────────────────────────────────────── */

@media (prefers-color-scheme: dark) {
    :root {
        --member-bg: #0f172a;
        --member-surface: #1e293b;
        --member-surface-hover: #334155;
        --member-border: #334155;
        --member-text: #f1f5f9;
        --member-text-muted: #94a3b8;
        --member-accent: #3b82f6;
        --member-accent-hover: #2563eb;
    }

    .member-btn {
        background: var(--member-accent);
        color: var(--member-accent-text);
    }

    .member-btn:hover {
        background: var(--member-accent-hover);
    }

    .member-btn-secondary {
        color: var(--member-text);
        border-color: var(--member-border);
    }

    .member-btn-secondary:hover {
        background: var(--member-surface-hover);
    }

    dark .member-btn {
        background: var(--member-accent);
    }

    dark .member-input {
        background: var(--member-bg);
        color: var(--member-text);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   Phase 5: Device Management, Login History, Rate Limit UI, Loading States
   ═══════════════════════════════════════════════════════════════════════════ */

/* Phase 5.4: Loading States */
@keyframes member-skeleton-pulse {
    0%   { opacity: 0.5; }
    50%  { opacity: 1;   }
    100% { opacity: 0.5; }
}

.member-skeleton {
    background: var(--member-surface-hover, rgba(255,255,255,0.08));
    border-radius: var(--member-radius, 0.5rem);
    animation: member-skeleton-pulse 1.4s ease-in-out infinite;
    pointer-events: none;
    user-select: none;
    min-height: 1rem;
}

.member-skeleton-text {
    width: 100%;
    height: 0.875rem;
    border-radius: 0.25rem;
    background: var(--member-surface-hover, rgba(255,255,255,0.08));
    animation: member-skeleton-pulse 1.4s ease-in-out infinite;
}

.member-skeleton-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--member-surface-hover, rgba(255,255,255,0.08));
    animation: member-skeleton-pulse 1.4s ease-in-out infinite;
}

.member-skeleton-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Phase 5.1: Device Cards */
.member-device-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1rem;
    background: var(--member-surface, rgba(255,255,255,0.04));
    border: 1px solid var(--member-border, rgba(255,255,255,0.08));
    border-radius: var(--member-radius, 0.5rem);
    transition: background 0.15s ease;
}

.member-device-card:hover {
    background: var(--member-surface-hover, rgba(255,255,255,0.08));
}

.member-device-card__info {
    flex: 1;
    min-width: 0;
}

.member-device-card__name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--member-text, #f1f5f9);
}

/* Phase 5.2: Activity Timeline */
.member-activity-timeline {
    position: relative;
    padding-left: 1.75rem;
}

.member-activity-timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--member-border, rgba(255,255,255,0.08));
}

.member-activity-item {
    position: relative;
    padding: 0.75rem 0 0.75rem 0.75rem;
    border-bottom: 1px solid var(--member-border, rgba(255,255,255,0.08));
}

.member-activity-item::before {
    content: '';
    position: absolute;
    left: -1.375rem;
    top: 1.125rem;
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    background: var(--member-primary, #6366f1);
    border: 2px solid var(--member-bg, #0f172a);
}

.member-activity-item--failed::before {
    background: var(--member-error, #ef4444);
}

.member-activity-item__method {
    font-weight: 600;
    font-size: 0.875rem;
}

.member-activity-item__detail {
    font-size: 0.75rem;
    color: var(--member-text-muted, #94a3b8);
    margin-top: 0.125rem;
}

/* Phase 5.3: Rate Limit Alert */
.member-alert--rate-limit {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #f59e0b;
    padding: 0.75rem 1rem;
    border-radius: var(--member-radius, 0.5rem);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: none;
}

.member-alert--rate-limit.is-visible {
    display: block;
}

.member-rate-limit-countdown {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

#rate-limit-message {
    display: none;
}

#rate-limit-message.is-visible {
    display: block;
}


/* @keyframes.*pulse - skeleton loader pulse animation */