/**
 * User Center Stylesheet - Modern Design
 * Unified design system matching wallet page
 * @author AI Assistant
 * @created 2026-03-04
 * @version 2.0
 */

/* ========================================
   CSS Variables - Design System
   ======================================== */
:root {
    /* Background Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --bg-card-hover: #1c1c1c;
    --bg-input: #0d0d0d;
    --bg-sidebar: #0d0d0d;

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    /* Accent Colors */
    --accent-gold: #fbbf24;
    --accent-gold-hover: #f59e0b;
    --accent-gold-light: rgba(251, 191, 36, 0.15);

    /* Status Colors */
    --success: #22c55e;
    --success-light: rgba(34, 197, 94, 0.15);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.15);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.15);
    --info: #3b82f6;
    --info-light: rgba(59, 130, 246, 0.15);

    /* Border Colors */
    --border-primary: #2a2a2a;
    --border-secondary: #1f1f1f;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;

    /* Shadows */
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-focus: 0 0 0 3px rgba(251, 191, 36, 0.15);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
}

/* ========================================
   Content Card - Main Container
   ======================================== */
.content-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.content-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-lg) 0;
    margin-bottom: var(--space-md);
}

.content-card-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.content-card-header h2 i {
    color: var(--accent-gold);
    font-size: 20px;
}

.content-card-body {
    padding: 0 var(--space-lg) var(--space-lg);
}

/* ========================================
   Forms
   ======================================== */
.user-form {
    padding: 0 var(--space-lg) var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-group label.required::after {
    content: ' *';
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 400;
    transition: all var(--transition-fast);
    box-sizing: border-box;
    font-family: inherit;
    min-height: 48px;
}

.form-control:hover {
    border-color: var(--border-secondary);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: var(--shadow-focus);
}

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--bg-secondary);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.7;
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* Select Styling */
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
    cursor: pointer;
}

select.form-control option {
    background-color: var(--bg-card);
    color: var(--text-primary);
    padding: 8px;
}

/* Input Group */
.input-group {
    display: flex;
    gap: var(--space-sm);
}

.input-group .form-control {
    flex: 1;
}

.input-group .btn {
    flex-shrink: 0;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
    min-height: 48px;
}

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

.btn-primary {
    background-color: var(--accent-gold);
    color: #000;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-gold-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.3);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

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

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

.btn-danger {
    background-color: var(--danger);
    color: #fff;
}

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-success {
    background-color: var(--success);
    color: #fff;
}

.btn-success:hover:not(:disabled) {
    background-color: #16a34a;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    min-height: 40px;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 15px;
    min-height: 52px;
}

/* ========================================
   Form Actions
   ======================================== */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-primary);
}

.form-actions .btn {
    min-width: 140px;
}

/* ========================================
   Avatar Upload
   ======================================== */
.avatar-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: var(--space-xl);
}

.avatar-upload {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid var(--border-primary);
    transition: all var(--transition-fast);
    background-color: var(--bg-input);
}

.avatar-upload:hover {
    border-color: var(--accent-gold);
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.2);
}

.avatar-upload img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-upload-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.avatar-upload:hover .avatar-upload-overlay {
    opacity: 1;
}

.avatar-upload-overlay i {
    color: var(--text-primary);
    font-size: 28px;
}

.avatar-hint {
    display: block;
    margin-top: var(--space-sm);
    font-size: 12px;
    color: var(--text-muted);
}

/* ========================================
   Info Boxes - 重构后支持响应式
   ======================================== */
.info-box {
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    border: 1px solid transparent;
    width: 100%;
    box-sizing: border-box;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.info-box h4 {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 var(--space-sm) 0;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.info-box h4 i {
    flex-shrink: 0;
}

.info-box ul {
    margin: 0;
    padding-left: 20px;
    font-size: 13px;
    line-height: 1.8;
}

.info-box li {
    margin-bottom: 4px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.info-box-warning {
    background-color: var(--warning-light);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

.info-box-warning h4 {
    color: var(--warning);
}

.info-box-warning ul {
    color: rgba(245, 158, 11, 0.9);
}

.info-box-info {
    background-color: var(--info-light);
    border-color: rgba(59, 130, 246, 0.3);
    color: var(--info);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: var(--space-lg);
}

.info-box-info i {
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.info-box-info p {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    word-wrap: break-word;
    overflow-wrap: break-word;
    flex: 1;
    min-width: 0;
}

.info-box-success {
    background-color: var(--success-light);
    border-color: rgba(34, 197, 94, 0.3);
    color: var(--success);
}

.info-box-success h4 {
    color: var(--success);
}

.info-box-danger {
    background-color: var(--danger-light);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.info-box-danger h4 {
    color: var(--danger);
}

/* ========================================
   Status Badges
   ======================================== */
.status-row {
    margin-bottom: var(--space-lg);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
}

.status-badge i {
    font-size: 14px;
}

.status-success {
    background-color: var(--success-light);
    color: var(--success);
}

.status-danger {
    background-color: var(--danger-light);
    color: var(--danger);
}

.status-warning {
    background-color: var(--warning-light);
    color: var(--warning);
}

.status-info {
    background-color: var(--info-light);
    color: var(--info);
}

/* ========================================
   Layer Forms (for modals/popups)
   ======================================== */
.form-layer {
    padding: var(--space-lg);
}

.form-layer .form-group {
    margin-bottom: var(--space-md);
}

.form-layer .form-control {
    background-color: var(--bg-card);
}

.form-layer .btn-captcha {
    display: inline-flex;
    align-items: center;
    padding: 10px 16px;
    background-color: var(--accent-gold-light);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: var(--radius-md);
    color: var(--accent-gold);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    min-height: 48px;
}

.form-layer .btn-captcha:hover {
    background-color: var(--accent-gold);
    color: #000;
}

.form-layer .btn-captcha.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-footer {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-primary);
}

/* ========================================
   Validation Messages
   ======================================== */
.msg-box {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    min-height: 18px;
}

.msg-box.error {
    color: var(--danger);
}

.msg-box.success {
    color: var(--success);
}

.msg-box.warning {
    color: var(--warning);
}

/* ========================================
   Responsive Design
   ======================================== */

/* PC (>= 1024px) */
@media (min-width: 1024px) {
    .content-card {
        border-radius: var(--radius-xl);
    }

    .form-actions {
        justify-content: flex-end;
    }
}

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    .content-card-header {
        padding: var(--space-md) var(--space-md) 0;
    }

    .content-card-header h2 {
        font-size: 16px;
    }

    .user-form {
        padding: 0 var(--space-md) var(--space-md);
    }

    .form-row {
        gap: var(--space-sm);
    }

    .form-group {
        margin-bottom: var(--space-md);
    }

    .form-actions {
        margin-top: var(--space-lg);
        padding-top: var(--space-md);
    }

    .form-actions .btn {
        min-width: 120px;
    }
}

/* Mobile (< 768px) */
@media (max-width: 767px) {
    .content-card {
        border-radius: var(--radius-lg);
        margin: 0;
        border-left: none;
        border-right: none;
        max-width: 100%;
        box-sizing: border-box;
    }

    .content-card-header {
        padding: var(--space-md) var(--space-md) 0;
        margin-bottom: var(--space-sm);
    }

    .content-card-header h2 {
        font-size: 16px;
    }

    .content-card-header h2 i {
        font-size: 18px;
    }

    .user-form {
        padding: 0 var(--space-md) var(--space-md);
    }

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

    .form-group {
        margin-bottom: var(--space-md);
    }

    .form-group label {
        font-size: 12px;
        margin-bottom: 6px;
    }

    .form-control {
        padding: 14px 16px;
        font-size: 16px; /* Prevent iOS zoom */
        min-height: 48px;
    }

    .input-group {
        flex-direction: row;
        gap: 8px;
    }

    .input-group .btn {
        padding: 10px 14px;
        font-size: 12px;
        min-height: 48px;
    }

    .btn {
        padding: 14px 20px;
        font-size: 14px;
        min-height: 48px;
    }

    .btn-sm {
        padding: 10px 14px;
        font-size: 12px;
        min-height: 40px;
    }

    .form-actions {
        flex-direction: column;
        gap: var(--space-sm);
        margin-top: var(--space-lg);
    }

    .form-actions .btn {
        width: 100%;
        min-width: auto;
    }

    /* Avatar Upload Mobile */
    .avatar-upload {
        width: 100px;
        height: 100px;
    }

    .avatar-upload-overlay {
        opacity: 0.8;
    }

    .avatar-upload-overlay i {
        font-size: 24px;
    }

    /* Info Boxes Mobile */
    .info-box {
        padding: var(--space-sm);
        margin-bottom: var(--space-md);
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    .info-box h4 {
        font-size: 13px;
        gap: 6px;
    }

    .info-box h4 i {
        font-size: 14px;
    }

    .info-box ul {
        font-size: 12px;
        padding-left: 16px;
        line-height: 1.7;
    }

    .info-box li {
        margin-bottom: 3px;
    }

    .info-box-info {
        padding: var(--space-sm);
        gap: 10px;
    }

    .info-box-info i {
        font-size: 16px;
        margin-top: 1px;
    }

    .info-box-info p {
        font-size: 12px;
        line-height: 1.5;
    }

    /* Status Badge Mobile */
    .status-badge {
        padding: 5px 10px;
        font-size: 12px;
    }
}

/* Small Mobile (< 480px) */
@media (max-width: 479px) {
    .content-card {
        border-radius: 0;
        margin: 0 calc(-1 * var(--space-md));
    }

    .content-card-header {
        padding: var(--space-sm) var(--space-sm) 0;
    }

    .content-card-header h2 {
        font-size: 15px;
    }

    .user-form {
        padding: 0 var(--space-sm) var(--space-sm);
    }

    .form-control {
        padding: 12px 14px;
    }

    /* Info Boxes Small Mobile */
    .info-box {
        padding: 10px 12px;
        margin-bottom: 12px;
        border-radius: var(--radius-md);
    }

    .info-box h4 {
        font-size: 12px;
        margin-bottom: 8px;
        gap: 5px;
    }

    .info-box h4 i {
        font-size: 12px;
    }

    .info-box ul {
        font-size: 11px;
        padding-left: 14px;
        line-height: 1.6;
    }

    .info-box li {
        margin-bottom: 2px;
    }

    .info-box-info {
        padding: 10px 12px;
        gap: 8px;
    }

    .info-box-info i {
        font-size: 14px;
    }

    .info-box-info p {
        font-size: 11px;
        line-height: 1.4;
    }

    .btn {
        padding: 12px 16px;
    }

    .avatar-upload {
        width: 90px;
        height: 90px;
    }
}

/* ========================================
   Animation Keyframes
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Apply animations */
.content-card {
    animation: fadeIn 0.3s ease;
}

/* Loading State */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-primary);
    border-top-color: var(--accent-gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Reset Method Tabs */
.reset-method-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-primary);
    padding-bottom: 16px;
}

.reset-method-tabs .tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.reset-method-tabs .tab-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-gold);
    color: var(--text-primary);
}

.reset-method-tabs .tab-btn.active {
    background: var(--accent-gold-light);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.reset-method-tabs .tab-btn i {
    font-size: 16px;
}

/* Reset Method Content */
.reset-method-content {
    display: none;
}

.reset-method-content.active {
    display: block;
}

/* Input Group */
.reset-method-content .input-group {
    display: flex;
    gap: 0;
}

.reset-method-content .input-group .form-control {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    border-right: none;
}

.reset-method-content .input-group .input-group-btn {
    display: flex;
}

.reset-method-content .input-group .btn {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    border-left: none;
    background: var(--bg-input);
    color: var(--accent-gold);
    font-weight: 500;
    padding: 0 20px;
    height: 42px;
    white-space: nowrap;
}

.reset-method-content .input-group .btn:hover:not(:disabled) {
    background: var(--bg-card-hover);
}

.reset-method-content .input-group .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Responsive */
@media (max-width: 767px) {
    .reset-method-tabs {
        flex-direction: column;
    }
    
    .reset-method-tabs .tab-btn {
        justify-content: center;
    }
}