:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-elevated: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.05);
    --accent: #111827;
    --accent-glow: rgba(0, 0, 0, 0.1);
    --danger: #ef4444;
    --warning: #f59e0b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --radius: 16px;
    --radius-sm: 12px;
    --font: 'Red Hat Display', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    min-height: 100vh;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font);
}

/* ========== NAVIGATION - CENTERED TITLE ========== */
.top-nav {
    position: sticky;
    top: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
    padding: 1rem 0;
}

.nav-content {
    width: 100%;
    padding: 0 1.5rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

/* Back Button - Left */
.back-btn {
    color: var(--text-secondary);
    text-decoration: none;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    flex-shrink: 0;
    z-index: 2;
}

.back-btn:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

/* Title - PERFECT CENTER */
.nav-content h1 {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    padding: 0;
    white-space: nowrap;
    z-index: 1;
}

/* Icon Button - Right */
.icon-btn {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    flex-shrink: 0;
    z-index: 2;
}

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

/* ========== MAIN CONTENT ========== */
.settings-container {
    width: 100%;
    max-width: 100%;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.settings-section {
    width: 100%;
}

.section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
}

.settings-card {
    width: 100%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.setting-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--glass-border);
}

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

.setting-item:hover {
    background: rgba(0, 0, 0, 0.02);
}

.setting-item.toggle-item {
    cursor: default;
}

.setting-item.toggle-item:hover {
    background: transparent;
}

.setting-item.danger {
    color: var(--danger);
}

.setting-item.danger .setting-icon {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.setting-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.setting-icon.user { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.setting-icon.security { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.setting-icon.kyc { background: rgba(16, 185, 129, 0.1); color: var(--accent); }
.setting-icon.notifications { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.setting-icon.email { background: rgba(236, 72, 153, 0.1); color: #ec4899; }
.setting-icon.whatsapp { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.setting-icon.language { background: rgba(99, 102, 241, 0.1); color: #6366f1; }
.setting-icon.payment { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.setting-icon.autopay { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.setting-icon.limit { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
.setting-icon.points { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.setting-icon.convert { background: rgba(16, 185, 129, 0.1); color: var(--accent); }
.setting-icon.privacy { background: rgba(99, 102, 241, 0.1); color: #6366f1; }
.setting-icon.analytics { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.setting-icon.download { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.setting-icon.support { background: rgba(16, 185, 129, 0.1); color: var(--accent); }
.setting-icon.bug { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.setting-icon.rate { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.setting-icon.logout { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
.setting-icon.delete { background: rgba(239, 68, 68, 0.1); color: var(--danger); }

.setting-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 0;
}

.setting-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.setting-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.setting-action {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.value-preview {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.verified {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 52px;
    height: 28px;
    display: inline-block;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    border-radius: 28px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background: var(--text-secondary);
    transition: var(--transition);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input:checked + .toggle-slider {
    background: var(--accent-glow);
    border-color: var(--accent);
}

input:checked + .toggle-slider:before {
    transform: translateX(24px);
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

input:focus + .toggle-slider {
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Danger Zone */
.danger-zone .section-title {
    color: var(--danger);
}

/* App Version */
.app-version {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    width: 90%;
    max-width: 400px;
    padding: 1.5rem;
    transform: scale(0.9);
    transition: transform 0.3s;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
}

.modal:not(.hidden) .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.close-btn:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.input-group input {
    background: var(--bg-elevated);
    border: 1px solid var(--glass-border);
    padding: 0.875rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.input-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-primary {
    background: var(--accent);
    color: #ffffff;
    border: none;
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.hidden {
    display: none !important;
}

/* Animations */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.settings-section {
    animation: slideUp 0.5s ease-out;
    animation-fill-mode: both;
}

.settings-section:nth-child(1) { animation-delay: 0.1s; }
.settings-section:nth-child(2) { animation-delay: 0.2s; }
.settings-section:nth-child(3) { animation-delay: 0.3s; }
.settings-section:nth-child(4) { animation-delay: 0.4s; }
.settings-section:nth-child(5) { animation-delay: 0.5s; }
.settings-section:nth-child(6) { animation-delay: 0.6s; }

/* Desktop */
@media (min-width: 768px) {
    .settings-container {
        max-width: 800px;
        margin: 0 auto;
        padding: 2rem;
    }
    
    .nav-content {
        max-width: 800px;
        margin: 0 auto;
    }
}

/* Modal Overlay */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

/* KYC Modal Styles */
.kyc-modal .modal-body {
    max-height: 60vh;
    overflow-y: auto;
}

.kyc-intro {
    text-align: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 1.5rem;
}

.kyc-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.kyc-intro p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.kyc-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.kyc-step {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.kyc-step.completed {
    opacity: 0.6;
    border-color: var(--accent);
}

.kyc-step.completed .step-number {
    background: var(--accent);
    color: #000;
}

.kyc-step.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.step-content p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.doc-options {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.doc-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-elevated);
    border-radius: 20px;
    cursor: pointer;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.doc-option input {
    display: none;
}

.doc-option:has(input:checked) {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
}

.kyc-status {
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Language List */
.language-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.language-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.language-option:hover {
    background: rgba(255, 255, 255, 0.05);
}

.language-option.active {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.language-option i {
    color: var(--accent);
}

/* Limit Presets */
.limit-presets {
    display: flex;
    gap: 0.75rem;
    margin: 1rem 0;
}

.limit-presets button {
    flex: 1;
    padding: 0.75rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
}

.limit-presets button:hover {
    border-color: var(--accent);
    background: var(--accent-glow);
}

/* Points Display */
.points-balance-display {
    text-align: center;
    padding: 1.5rem;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.points-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.points-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

.conversion-rate {
    text-align: center;
    padding: 0.75rem;
    background: var(--accent-glow);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--accent);
}

.conversion-result {
    text-align: center;
    padding: 1rem;
    margin: 1rem 0;
    font-size: 1.1rem;
}

.conversion-result strong {
    color: var(--accent);
    font-size: 1.25rem;
}

/* Payment Methods */
.payment-methods-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.payment-method-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
}

.payment-method-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.payment-method-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.payment-method-name {
    font-weight: 600;
}

.payment-method-detail {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.payment-method-action {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--danger);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.payment-method-action:hover {
    background: rgba(239, 68, 68, 0.1);
}

.add-payment-btn {
    width: 100%;
    margin-top: 0.5rem;
}

/* Status Badges */
.status-badge.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

/* Modal Description */
.modal-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

/* Secondary Button */
.btn-secondary {
    width: 100%;
    padding: 0.875rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-elevated);
    color: var(--text-primary);
    padding: 1rem 2rem;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 3000;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

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