/* =====================================================================
   ArchTec Auth & Account - Design 2026
   =====================================================================
   - Glassmorphism layered sobre mesh gradient animado
   - Fluid typography, container queries ready
   - Floating labels, micro-interactions
   - Dark mode automatico (prefers-color-scheme)
   - Reduced-motion respeitado
   - WCAG 2.2 AA (contraste, focus visible, landmarks)
   ===================================================================== */

:root {
    --at-primary: #0B1E3A;
    --at-primary-light: #1E3A8A;
    --at-accent: #3B82F6;
    --at-accent-soft: #60A5FA;
    --at-purple: #8B5CF6;
    --at-pink: #EC4899;
    --at-cyan: #06B6D4;

    --at-bg: #F6F8FD;
    --at-surface: #FFFFFF;
    --at-surface-raised: rgba(255, 255, 255, 0.72);
    --at-border: rgba(23, 43, 77, 0.08);
    --at-border-strong: rgba(23, 43, 77, 0.16);

    --at-text: #0F1729;
    --at-text-muted: #5B6577;
    --at-text-dim: #94A3B8;

    --at-danger: #DC2626;
    --at-warning: #D97706;
    --at-success: #059669;

    --at-radius-sm: 0.5rem;
    --at-radius: 1rem;
    --at-radius-lg: 1.5rem;
    --at-radius-pill: 9999px;

    --at-shadow-sm: 0 1px 2px rgba(15, 23, 41, 0.06);
    --at-shadow: 0 8px 24px rgba(15, 23, 41, 0.08), 0 1px 2px rgba(15, 23, 41, 0.04);
    --at-shadow-lg: 0 24px 64px rgba(15, 23, 41, 0.14), 0 2px 8px rgba(15, 23, 41, 0.06);
    --at-shadow-glow: 0 0 0 1px rgba(59, 130, 246, 0.3), 0 12px 32px rgba(59, 130, 246, 0.22);

    --at-blur: 24px;
    --at-blur-sm: 12px;

    --at-ease: cubic-bezier(0.22, 1, 0.36, 1);
    --at-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --at-bg: #0A0F1E;
        --at-surface: #11182B;
        --at-surface-raised: rgba(17, 24, 43, 0.72);
        --at-border: rgba(148, 163, 184, 0.10);
        --at-border-strong: rgba(148, 163, 184, 0.22);
        --at-text: #E8EDF5;
        --at-text-muted: #98A3B5;
        --at-text-dim: #64748B;
        --at-shadow: 0 8px 24px rgba(0, 0, 0, 0.40), 0 1px 2px rgba(0, 0, 0, 0.20);
        --at-shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.55), 0 2px 8px rgba(0, 0, 0, 0.30);
    }
}

/* Force theme via [data-theme] */
[data-theme="light"] {
    color-scheme: light;
    --at-bg: #F6F8FD;
    --at-surface: #FFFFFF;
    --at-text: #0F1729;
}

[data-theme="dark"] {
    color-scheme: dark;
    --at-bg: #0A0F1E;
    --at-surface: #11182B;
    --at-text: #E8EDF5;
}

/* ===== Reset minimo ===== */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body.at-body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--at-text);
    background: var(--at-bg);
    -webkit-font-smoothing: antialiased;
    position: relative;
    overflow-x: hidden;
}

/* ===== Mesh gradient de fundo ===== */
.at-mesh {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.at-mesh::before,
.at-mesh::after {
    content: "";
    position: absolute;
    width: 60vmax;
    height: 60vmax;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.45;
    animation: at-float 22s ease-in-out infinite;
}

.at-mesh::before {
    background: radial-gradient(circle at center, var(--at-accent), transparent 70%);
    top: -20%;
    left: -10%;
}

.at-mesh::after {
    background: radial-gradient(circle at center, var(--at-purple), transparent 70%);
    bottom: -25%;
    right: -15%;
    animation-delay: -11s;
    animation-direction: reverse;
}

@keyframes at-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(5vw, 3vh) scale(1.1); }
    66% { transform: translate(-4vw, -2vh) scale(0.95); }
}

@media (prefers-reduced-motion: reduce) {
    .at-mesh::before,
    .at-mesh::after { animation: none; }
    *, *::before, *::after {
        animation-duration: 0.001s !important;
        animation-delay: 0s !important;
        transition-duration: 0.001s !important;
    }
}

/* ===== Header minimo ===== */
.at-nav {
    position: relative;
    z-index: 10;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
}

.at-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--at-text);
    text-decoration: none;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.at-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--at-primary), var(--at-primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--at-shadow-sm);
}

.at-logo-icon svg { width: 22px; height: 22px; }

.at-nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.at-nav-links a {
    color: var(--at-text-muted);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.2s var(--at-ease);
}

.at-nav-links a:hover { color: var(--at-text); }

/* ===== Container central ===== */
.at-auth-layout {
    position: relative;
    z-index: 1;
    min-height: calc(100vh - 80px);
    min-height: calc(100dvh - 80px);
    display: grid;
    place-items: center;
    padding: 2rem 1.25rem 4rem;
}

/* ===== Card glass ===== */
.at-card {
    background: var(--at-surface-raised);
    backdrop-filter: blur(var(--at-blur)) saturate(140%);
    -webkit-backdrop-filter: blur(var(--at-blur)) saturate(140%);
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius-lg);
    box-shadow: var(--at-shadow-lg);
    width: 100%;
    max-width: 460px;
    padding: clamp(1.75rem, 4vw, 2.5rem);
    animation: at-card-in 0.6s var(--at-ease-spring) both;
}

@keyframes at-card-in {
    from { opacity: 0; transform: translateY(24px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.at-card--wide { max-width: 680px; }
.at-card--ultra { max-width: 920px; }

.at-card__header {
    margin-bottom: 1.5rem;
    text-align: center;
}

.at-card__header h1 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(1.5rem, 3vw, 1.875rem);
    font-weight: 700;
    margin: 0 0 0.5rem;
    letter-spacing: -0.02em;
    color: var(--at-text);
}

.at-card__header p {
    margin: 0;
    color: var(--at-text-muted);
    font-size: 0.9375rem;
}

/* ===== Form ===== */
.at-form {
    display: flex;
    flex-direction: column;
    gap: 1.125rem;
}

.at-field {
    position: relative;
}

.at-field__input {
    width: 100%;
    padding: 1.25rem 1rem 0.5rem;
    font: inherit;
    font-size: 1rem;
    color: var(--at-text);
    background: var(--at-surface);
    border: 1.5px solid var(--at-border-strong);
    border-radius: var(--at-radius-sm);
    transition: border-color 0.2s var(--at-ease), box-shadow 0.2s var(--at-ease), background 0.2s var(--at-ease);
    outline: none;
}

.at-field__input:hover { border-color: var(--at-text-dim); }

.at-field__input:focus-visible {
    border-color: var(--at-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.at-field__input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.at-field__label {
    position: absolute;
    top: 50%;
    left: 1rem;
    transform: translateY(-50%);
    color: var(--at-text-dim);
    font-size: 0.9375rem;
    pointer-events: none;
    transition: all 0.2s var(--at-ease);
    background: transparent;
}

.at-field__input:focus-visible + .at-field__label,
.at-field__input:not(:placeholder-shown) + .at-field__label {
    top: 0.5rem;
    transform: translateY(0);
    font-size: 0.75rem;
    color: var(--at-accent);
}

.at-field__help {
    margin-top: 0.375rem;
    font-size: 0.8125rem;
    color: var(--at-text-muted);
}

.at-field__error {
    margin-top: 0.375rem;
    font-size: 0.8125rem;
    color: var(--at-danger);
    min-height: 1.2em;
}

.at-field__input[aria-invalid="true"] {
    border-color: var(--at-danger);
}

.at-field__input[aria-invalid="true"]:focus-visible {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.18);
}

/* Strength meter */
.at-strength {
    margin-top: 0.5rem;
    display: flex;
    gap: 4px;
}

.at-strength__bar {
    flex: 1;
    height: 3px;
    background: var(--at-border-strong);
    border-radius: 2px;
    transition: background 0.25s var(--at-ease);
}

.at-strength--1 .at-strength__bar:nth-child(-n+1) { background: var(--at-danger); }
.at-strength--2 .at-strength__bar:nth-child(-n+2) { background: var(--at-warning); }
.at-strength--3 .at-strength__bar:nth-child(-n+3) { background: var(--at-accent); }
.at-strength--4 .at-strength__bar { background: var(--at-success); }

/* Checkbox */
.at-check {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    font-size: 0.875rem;
    color: var(--at-text-muted);
    cursor: pointer;
    line-height: 1.4;
}

.at-check input {
    appearance: none;
    width: 20px;
    height: 20px;
    min-width: 20px;
    border: 1.5px solid var(--at-border-strong);
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    background: var(--at-surface);
    transition: all 0.2s var(--at-ease);
}

.at-check input:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.3);
    outline-offset: 2px;
}

.at-check input:checked {
    background: var(--at-accent);
    border-color: var(--at-accent);
}

.at-check input:checked::after {
    content: "";
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") no-repeat center / 14px;
}

.at-check a { color: var(--at-accent); text-decoration: none; }
.at-check a:hover { text-decoration: underline; }

/* ===== Botoes ===== */
.at-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--at-radius-pill);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s var(--at-ease), box-shadow 0.2s var(--at-ease), background 0.2s var(--at-ease);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.at-btn:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.4);
    outline-offset: 3px;
}

.at-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.at-btn--primary {
    background: linear-gradient(135deg, var(--at-accent), var(--at-primary-light));
    color: white;
    box-shadow: var(--at-shadow);
}

.at-btn--primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--at-shadow-glow);
}

.at-btn--secondary {
    background: var(--at-surface);
    color: var(--at-text);
    border: 1.5px solid var(--at-border-strong);
}

.at-btn--secondary:hover:not(:disabled) {
    background: var(--at-bg);
    border-color: var(--at-text-dim);
}

.at-btn--ghost {
    background: transparent;
    color: var(--at-text-muted);
}

.at-btn--ghost:hover:not(:disabled) { color: var(--at-text); background: var(--at-border); }

.at-btn--danger {
    background: var(--at-danger);
    color: white;
}

.at-btn--block { width: 100%; }

/* Spinner */
.at-spinner {
    width: 18px; height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: currentColor;
    border-radius: 50%;
    animation: at-spin 0.7s linear infinite;
}

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

/* ===== Divider + alt login ===== */
.at-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--at-text-dim);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 1.25rem 0;
}

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

/* ===== Footer do card ===== */
.at-card__footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--at-text-muted);
}

.at-card__footer a {
    color: var(--at-accent);
    text-decoration: none;
    font-weight: 500;
}

.at-card__footer a:hover { text-decoration: underline; }

/* ===== Alertas inline ===== */
.at-alert {
    padding: 0.875rem 1rem;
    border-radius: var(--at-radius);
    font-size: 0.875rem;
    display: flex;
    gap: 0.625rem;
    align-items: flex-start;
    border: 1px solid;
}

.at-alert--info {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.2);
    color: var(--at-accent);
}

.at-alert--success {
    background: rgba(5, 150, 105, 0.08);
    border-color: rgba(5, 150, 105, 0.2);
    color: var(--at-success);
}

.at-alert--warn {
    background: rgba(217, 119, 6, 0.08);
    border-color: rgba(217, 119, 6, 0.2);
    color: var(--at-warning);
}

.at-alert--error {
    background: rgba(220, 38, 38, 0.08);
    border-color: rgba(220, 38, 38, 0.2);
    color: var(--at-danger);
}

/* ===== Toasts ===== */
.at-toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
    max-width: calc(100vw - 2rem);
}

.at-toast {
    pointer-events: auto;
    min-width: 280px;
    padding: 0.875rem 1rem;
    background: var(--at-surface);
    border: 1px solid var(--at-border-strong);
    border-radius: var(--at-radius);
    box-shadow: var(--at-shadow-lg);
    font-size: 0.875rem;
    color: var(--at-text);
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.25s var(--at-ease);
}

.at-toast--show { opacity: 1; transform: translateX(0); }
.at-toast--success { border-left: 4px solid var(--at-success); }
.at-toast--error { border-left: 4px solid var(--at-danger); }
.at-toast--info { border-left: 4px solid var(--at-accent); }
.at-toast--warn { border-left: 4px solid var(--at-warning); }

/* ===== QR code + 2FA ===== */
.at-qr {
    display: block;
    width: 240px;
    height: 240px;
    margin: 1rem auto;
    background: white;
    border-radius: var(--at-radius);
    padding: 0.75rem;
    box-shadow: var(--at-shadow);
}

.at-qr img { width: 100%; height: 100%; display: block; }

.at-secret {
    font-family: ui-monospace, SFMono-Regular, 'Menlo', monospace;
    font-size: 0.8125rem;
    background: var(--at-bg);
    padding: 0.625rem 0.875rem;
    border-radius: var(--at-radius-sm);
    border: 1px solid var(--at-border-strong);
    word-break: break-all;
    user-select: all;
    text-align: center;
    letter-spacing: 0.08em;
}

.at-otp-input {
    font-family: ui-monospace, SFMono-Regular, 'Menlo', monospace;
    font-size: 1.5rem;
    letter-spacing: 0.5em;
    text-align: center;
}

.at-backup-codes {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: 0.875rem;
}

.at-backup-codes code {
    background: var(--at-bg);
    padding: 0.5rem 0.75rem;
    border-radius: var(--at-radius-sm);
    border: 1px solid var(--at-border-strong);
    text-align: center;
    user-select: all;
}

/* ===== Perfil / conta layout ===== */
.at-account-grid {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 1.5rem;
    max-width: 1024px;
    margin: 2rem auto;
    padding: 0 1.25rem;
}

@media (max-width: 768px) {
    .at-account-grid { grid-template-columns: 1fr; }
}

.at-side-nav {
    background: var(--at-surface-raised);
    backdrop-filter: blur(var(--at-blur-sm));
    -webkit-backdrop-filter: blur(var(--at-blur-sm));
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius);
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    align-self: start;
    position: sticky;
    top: 1rem;
}

.at-side-nav a {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 0.875rem;
    border-radius: 0.625rem;
    color: var(--at-text-muted);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: all 0.15s var(--at-ease);
}

.at-side-nav a:hover {
    background: var(--at-border);
    color: var(--at-text);
}

.at-side-nav a.active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.08));
    color: var(--at-accent);
    font-weight: 500;
}

.at-panel {
    background: var(--at-surface-raised);
    backdrop-filter: blur(var(--at-blur-sm));
    -webkit-backdrop-filter: blur(var(--at-blur-sm));
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius);
    padding: clamp(1.5rem, 3vw, 2rem);
}

.at-panel + .at-panel { margin-top: 1.5rem; }

.at-panel h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 1rem;
    letter-spacing: -0.01em;
}

.at-panel__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--at-border);
    gap: 1rem;
    flex-wrap: wrap;
}

.at-panel__row:last-child { border-bottom: none; }

.at-panel__row dt, .at-panel__row .at-key {
    color: var(--at-text-muted);
    font-size: 0.875rem;
}

.at-panel__row dd, .at-panel__row .at-val {
    margin: 0;
    color: var(--at-text);
    font-size: 0.9375rem;
    font-weight: 500;
}

/* Favoritos grid */
.at-fav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.at-fav-card {
    background: var(--at-surface);
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius);
    padding: 1rem;
    transition: transform 0.25s var(--at-ease), box-shadow 0.25s var(--at-ease);
}

.at-fav-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--at-shadow);
}

.at-fav-card h3 {
    margin: 0 0 0.25rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

.at-fav-card h3 a { color: inherit; text-decoration: none; }
.at-fav-card h3 a:hover { color: var(--at-accent); }

.at-fav-card p {
    font-size: 0.8125rem;
    color: var(--at-text-muted);
    margin: 0;
}

/* Badges */
.at-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.625rem;
    border-radius: var(--at-radius-pill);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--at-bg);
    color: var(--at-text-muted);
    border: 1px solid var(--at-border-strong);
}

.at-badge--success { background: rgba(5, 150, 105, 0.12); color: var(--at-success); border-color: rgba(5, 150, 105, 0.24); }
.at-badge--warn { background: rgba(217, 119, 6, 0.12); color: var(--at-warning); border-color: rgba(217, 119, 6, 0.24); }
.at-badge--danger { background: rgba(220, 38, 38, 0.12); color: var(--at-danger); border-color: rgba(220, 38, 38, 0.24); }
.at-badge--accent { background: rgba(59, 130, 246, 0.12); color: var(--at-accent); border-color: rgba(59, 130, 246, 0.24); }

/* Links */
a.at-link {
    color: var(--at-accent);
    text-decoration: none;
}
a.at-link:hover { text-decoration: underline; }

/* Visually hidden (a11y) */
.at-sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0;
    margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0);
    white-space: nowrap; border: 0;
}

/* Skip link */
.at-skip {
    position: absolute;
    top: -40px;
    left: 1rem;
    background: var(--at-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0 0 var(--at-radius-sm) var(--at-radius-sm);
    text-decoration: none;
    z-index: 100;
}

.at-skip:focus-visible { top: 0; }