/* ==========================================================================
   AtListen Auth & Onboarding Styles
   Sign Up, Sign In, Onboarding Flow
   ========================================================================== */

/* Auth Layout
   ========================================================================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    background: var(--color-white);
}

.auth-container {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

/* Left Panel - Branding */
.auth-branding {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-12);
    background: linear-gradient(135deg, #faf9ff 0%, #f0f9ff 50%, #f0fdf4 100%);
    position: relative;
    overflow: hidden;
}

.auth-branding::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(16, 185, 129, 0.06) 0%, transparent 50%);
    animation: authGradientRotate 30s linear infinite;
}

@keyframes authGradientRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.auth-branding-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 400px;
}

.auth-logo {
    width: 160px;
    height: 160px;
    margin-bottom: var(--space-6);
    animation: authLogoFloat 6s ease-in-out infinite;
}

@keyframes authLogoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.auth-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.auth-branding h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.auth-branding p {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Right Panel - Form */
.auth-form-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-12);
    background: var(--color-white);
}

.auth-form-container {
    width: 100%;
    max-width: 400px;
}

.auth-header {
    margin-bottom: var(--space-8);
}

.auth-header h2 {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.auth-header p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
}

/* Form Elements */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    color: var(--color-text-primary);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.form-input:hover {
    border-color: var(--color-gray-300);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-input.error {
    border-color: var(--color-danger);
    background-color: var(--color-danger-bg);
}

.form-input.error:focus {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-error {
    font-size: var(--text-sm);
    color: var(--color-danger);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-hint {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
}

/* Password Field */
.password-field {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-tertiary);
    padding: var(--space-1);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.password-toggle svg {
    width: 20px;
    height: 20px;
}

/* Auth Actions */
.auth-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.auth-submit {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
}

.auth-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Loading state: hide the button's own content and center the AtListen infinity loader
   (injected by setLoading in auth.html). */
.auth-submit.loading,
.btn-social.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.auth-submit.loading > :not(.auth-btn-loader),
.btn-social.loading > :not(.auth-btn-loader) {
    visibility: hidden;
}

.auth-btn-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-4) 0;
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-gray-200);
}

/* Social Auth */
.social-auth {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-social:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

.btn-social svg {
    width: 20px;
    height: 20px;
}

/* Auth Footer */
.auth-footer {
    margin-top: var(--space-8);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.auth-footer a {
    color: var(--color-purple);
    font-weight: var(--font-semibold);
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Auth Links */
.auth-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
}

.auth-links a {
    color: var(--color-purple);
    text-decoration: none;
    font-weight: var(--font-medium);
}

.auth-links a:hover {
    text-decoration: underline;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: var(--space-2) 0;
    cursor: pointer;
}

.checkbox-wrapper input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-purple);
    cursor: pointer;
}

.checkbox-wrapper span {
    color: var(--color-text-secondary);
}

/* Verification Code Input */
.code-inputs {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 8px 0 4px;
}

.code-input {
    width: 48px;
    height: 58px;
    text-align: center;
    font-size: 26px;
    font-weight: 700;
    border: 2px solid var(--color-gray-300);
    border-radius: 12px;
    background: var(--color-white);
    color: var(--color-text-primary);
    caret-color: var(--color-purple);
    transition: border-color .15s ease, box-shadow .15s ease;
}

.code-input:hover {
    border-color: var(--color-gray-400);
}

.code-input:focus {
    outline: none;
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, .15);
}

.code-input.error {
    border-color: var(--color-danger);
    background-color: var(--color-danger-bg);
}

.code-info {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 13px;
    margin-top: 8px;
}

#code-error {
    justify-content: center;
    text-align: center;
    margin-top: 8px;
}

/* 6×48px boxes + 5×10px gaps = 338px overflows the ~327px available at a 375px
   viewport (auth-form-panel padding shrinks to --space-6 below 1024px), and
   body{overflow-x:hidden} silently clips the trailing box. Shrink to fit. */
@media (max-width: 400px) {
    .code-inputs {
        gap: 6px;
    }
    .code-input {
        width: 38px;
        height: 46px;
        font-size: 20px;
    }
}

/* Responsive Auth */
@media (max-width: 1024px) {
    .auth-branding {
        display: none;
    }
    
    .auth-form-panel {
        padding: var(--space-6);
    }
}

/* Onboarding Flow
   ========================================================================== */
.onboarding-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-white);
}

/* Thin brand-gradient strip across the very top of the page */
.onboarding-page::before {
    content: '';
    height: 3px;
    background: var(--gradient-brand);
    flex-shrink: 0;
}

/* Onboarding Header */
.onboarding-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-8);
    border-bottom: 1px solid var(--color-gray-100);
}

.onboarding-logo {
    display: flex;
    align-items: center;
}

/* The PNG is a wide mark+wordmark lockup — size by height only, never squash */
.onboarding-logo img {
    height: 60px;
    width: auto;
}

.onboarding-progress {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.progress-step {
    width: 28px;
    height: 4px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
}

.progress-step.active {
    width: 44px;
    background: var(--gradient-brand);
}

.progress-step.completed {
    background: var(--color-green);
}

@media (max-width: 560px) {
    .onboarding-header {
        padding: var(--space-4);
    }
    .progress-step {
        width: 16px;
    }
    .progress-step.active {
        width: 28px;
    }
}

.onboarding-skip {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    text-decoration: none;
    font-weight: var(--font-medium);
}

.onboarding-skip:hover {
    color: var(--color-text-secondary);
}

/* Onboarding Content */
.onboarding-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
}

.onboarding-step {
    width: 100%;
    max-width: 720px;
    animation: stepEnter 0.4s ease-out;
}

@keyframes stepEnter {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.onboarding-step.step-exit {
    animation: stepExit 0.3s ease-in forwards;
}

@keyframes stepExit {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(-20px);
    }
}

.step-header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.step-header h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.step-header p {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

.step-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-subtle);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
}

.step-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-purple);
}

/* Selection Cards */
.selection-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .selection-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.selection-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-6);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-2xl);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.selection-card:hover {
    border-color: var(--color-purple);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.selection-card.selected {
    border-color: var(--color-purple);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

.selection-card .card-icon {
    width: 48px;
    height: 48px;
    background: var(--color-gray-100);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    transition: all 0.2s ease;
}

.selection-card:hover .card-icon,
.selection-card.selected .card-icon {
    background: var(--gradient-brand);
}

.selection-card .card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
}

.selection-card:hover .card-icon svg,
.selection-card.selected .card-icon svg {
    color: var(--color-white);
}

.selection-card h3 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.selection-card p {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin: 0;
}

/* Multi-select Cards */
.selection-card.multi-select {
    position: relative;
}

.selection-card.multi-select::after {
    content: '';
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.selection-card.multi-select.selected::after {
    background: var(--color-purple);
    border-color: var(--color-purple);
    background-image: url("data:image/svg+xml,%3Csvg 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'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-size: 14px;
    background-position: center;
    background-repeat: no-repeat;
}

/* Depth Mode Cards */
.depth-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

@media (max-width: 640px) {
    .depth-grid {
        grid-template-columns: 1fr;
    }
}

.depth-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-6);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-2xl);
    cursor: pointer;
    transition: all 0.2s ease;
}

.depth-card:hover {
    border-color: var(--color-purple);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.depth-card.selected {
    border-color: var(--color-purple);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
}

.depth-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-3);
    width: fit-content;
}

.depth-card[data-depth="quick"] .depth-badge {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-green-dark);
}

.depth-card[data-depth="guide"] .depth-badge {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-blue-dark);
}

.depth-card[data-depth="mastery"] .depth-badge {
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-purple-dark);
}

.depth-card h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.depth-range {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-3);
}

.depth-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0 0 var(--space-4) 0;
    flex: 1;
}

/* Plan availability chip at the bottom of each depth card */
.depth-plan {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

.depth-plan.free {
    color: var(--color-green-dark);
    background: rgba(16, 185, 129, 0.1);
}

.depth-plan.pro {
    color: var(--color-white);
    background: var(--gradient-brand);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

.depth-note {
    margin-top: var(--space-6);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

/* Onboarding Footer */
.onboarding-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-8);
    border-top: 1px solid var(--color-gray-100);
}

.onboarding-footer .btn-group {
    display: flex;
    gap: var(--space-3);
}

.step-counter {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

/* Welcome Step */
.welcome-step {
    text-align: center;
    max-width: 560px;
}

.welcome-illustration {
    width: 280px;
    margin: 0 auto var(--space-6);
    position: relative;
}

.welcome-illustration img {
    width: 100%;
    height: auto;
}

.welcome-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin: var(--space-10) 0;
}

.welcome-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.welcome-feature .icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-subtle);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-feature .icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-purple);
}

.welcome-feature span {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
}

/* Complete Step */
.complete-step {
    text-align: center;
    max-width: 480px;
}

.complete-illustration {
    width: 160px;
    height: 160px;
    margin: 0 auto var(--space-8);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: completePulse 2s ease-in-out infinite;
}

@keyframes completePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.complete-illustration svg {
    width: 80px;
    height: 80px;
    color: var(--color-green);
}

.complete-summary {
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    margin: var(--space-8) 0;
    text-align: left;
}

.complete-summary h3 {
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.summary-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

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

.summary-item .icon {
    width: 32px;
    height: 32px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.summary-item .icon svg {
    width: 16px;
    height: 16px;
    color: var(--color-purple);
}

/* The avatar row renders the chosen animal in a brand-gradient circle */
.summary-item .icon.summary-avatar {
    background: var(--gradient-brand);
    border-radius: 50%;
}

.summary-item .icon.summary-avatar svg {
    color: var(--color-white);
}

.summary-item .label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.summary-item .value {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-left: auto;
}

/* Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    .auth-branding::before,
    .auth-logo,
    .complete-illustration {
        animation: none;
    }

    .onboarding-step,
    .onboarding-step.step-exit {
        animation: none;
    }
}