/* CSS Variables for Design System */
:root {
    /* Colors - Binance Theme */
    --color-primary: #F0B90B;
    --color-primary-hover: #d4a009;
    --color-bg-primary: #0B0E11;
    --color-bg-secondary: #1E2329;
    --color-bg-tertiary: #2B3139;
    --color-bg-card: #181A20;
    --color-text-primary: #EAECEF;
    --color-text-secondary: #848E9C;
    --color-text-tertiary: #5E6673;
    --color-success: #0ECB81;
    --color-danger: #F6465D;
    --color-border: #2B3139;
    --color-border-hover: #3E4551;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 28px;
    --font-size-4xl: 32px;

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header Styles */
.header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo h1 {
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.main-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative; /* anchor user-menu positioning */
}

/* Notifications */
.icon-btn {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    border-radius: 8px;
    padding: 8px 10px;
    cursor: pointer;
}
.icon-btn:hover { border-color: var(--color-primary); }
.notify-badge {
    position: relative; left: -6px; top: -10px;
    background: var(--color-danger);
    color: #fff; border-radius: 10px; padding: 1px 6px; font-size: 10px;
}
.notify-panel {
    position: absolute; right: 0; top: 100%;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px; width: 320px; display: none; z-index: 1200;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}
.notify-panel.active { display: block; }
.notify-header { display:flex; justify-content:space-between; align-items:center; padding: 10px 12px; border-bottom:1px solid var(--color-border); font-weight:600; }
.btn-clear { background: transparent; border: 1px solid var(--color-border); color: var(--color-text-secondary); border-radius: 6px; padding:4px 8px; cursor:pointer; }
.notify-list { max-height: 360px; overflow:auto; }
.notify-item { padding:10px 12px; border-bottom:1px solid var(--color-border); }
.notify-item:last-child { border-bottom:none; }
.notify-title { font-weight:600; margin-bottom: 4px; }
.notify-body { color: var(--color-text-primary); }
.notify-time { color: var(--color-text-secondary); font-size: 12px; margin-top: 4px; }

.market-ticker {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.ticker-label {
    color: var(--color-text-secondary);
    font-weight: 600;
}

.ticker-price {
    color: var(--color-text-primary);
    font-weight: 600;
}

.ticker-change {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.ticker-change.positive {
    color: var(--color-success);
}

.ticker-change.negative {
    color: var(--color-danger);
}

.btn-wallet {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-wallet:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-bg-tertiary);
}

.btn-login {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-login:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-bg-tertiary);
}

.btn-register {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-register:hover {
    background-color: var(--color-primary-hover);
}

.language-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.language-selector:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-bg-tertiary);
}

/* Hero Section */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-text h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero-text p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.btn-primary {
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

/* Enable ripple container behavior */
.btn-primary,
.btn-secondary {
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
}

/* Ripple effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    background: rgba(240, 185, 11, 0.35);
    animation: rippleAnim 600ms linear;
    pointer-events: none;
}

@keyframes rippleAnim {
    to {
        transform: scale(3);
        opacity: 0;
    }
}

.hero-chart {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
}

.chart-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.chart-placeholder i {
    font-size: var(--font-size-3xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

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

/* Market Overview Section */
.market-overview {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-primary);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.market-filters {
    display: flex;
    gap: var(--spacing-sm);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-primary);
}

.market-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.market-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.market-item:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.coin-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.coin-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-tertiary);
    border-radius: 50%;
    color: var(--color-primary);
    font-weight: 600;
}

.coin-details {
    display: flex;
    flex-direction: column;
}

.coin-symbol {
    font-weight: 600;
    color: var(--color-text-primary);
}

.coin-name {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.coin-price {
    font-weight: 600;
    color: var(--color-text-primary);
}

.coin-change {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.coin-change.positive {
    color: var(--color-success);
}

.coin-change.negative {
    color: var(--color-danger);
}

.coin-volume {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.coin-chart {
    width: 100px;
    height: 30px;
}

.sparkline {
    width: 100%;
    height: 100%;
}

/* Features Section */
.features {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    border-radius: 50%;
    font-size: var(--font-size-xl);
}

.feature-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #f4c430 100%);
}

.cta-content {
    text-align: center;
}

.cta-content h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-bg-primary);
}

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    color: var(--color-bg-primary);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.cta .btn-primary {
    background-color: var(--color-bg-primary);
    color: var(--color-primary);
}

.cta .btn-primary:hover {
    background-color: var(--color-bg-secondary);
}

.cta .btn-secondary {
    background-color: transparent;
    color: var(--color-bg-primary);
    border-color: var(--color-bg-primary);
}

.cta .btn-secondary:hover {
    background-color: var(--color-bg-primary);
    color: var(--color-primary);
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer-logo h2 {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.footer-links span {
    color: var(--color-text-secondary);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text-primary);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        height: auto;
        padding: var(--spacing-md) 0;
        gap: var(--spacing-md);
    }

    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }

    .header-actions {
        flex-wrap: wrap;
        justify-content: center;
    }

    .market-ticker {
        display: none;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h2 {
        font-size: var(--font-size-3xl);
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-chart {
        height: 300px;
    }

    .section-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .market-item {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .main-nav ul {
        gap: var(--spacing-sm);
    }

    .header-actions {
        gap: var(--spacing-sm);
    }

    .btn-login,
    .btn-register,
    .btn-wallet {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .hero-text h2 {
        font-size: var(--font-size-2xl);
    }

    .market-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.hidden {
    display: none;
}

.visible {
    display: block;
}

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

.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-tertiary);
}

/* Authentication Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    max-width: 420px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-xl);
}

/* Authentication Forms */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.form-group label {
    color: var(--color-text-primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.form-group input {
    padding: var(--spacing-md);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    width: 100%;
    height: 48px;
}

/* Binance-like input with icons */
.input-with-icon {
    position: relative;
}

.input-icon {
    position: absolute;
    top: 50%;
    left: 12px;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    pointer-events: none;
}

.input-with-icon input {
    padding-left: 40px;
}

.toggle-password {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
}

.toggle-password:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.15);
}

/* Don’t turn borders red on invalid; keep yellow theme */
.form-group input:invalid { border-color: var(--color-primary); }

.form-error {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.forgot-password {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.forgot-password:hover {
    color: var(--color-primary-hover);
}

.btn-auth {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-primary);
    color: var(--color-bg-primary);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    height: 48px;
}

.btn-auth:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
}

.btn-auth:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.auth-divider {
    position: relative;
    text-align: center;
    margin: var(--spacing-md) 0;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-border);
}

.auth-divider span {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    padding: 0 var(--spacing-md);
    font-size: var(--font-size-sm);
}

.social-login {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    height: 48px;
}

.btn-social:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-hover);
}

/* Variant closer to Binance Google button */
.btn-social.google {
    background: #ffffff;
    color: #1f1f1f;
    border-color: #e5e7eb;
}

.btn-social.google:hover {
    background: #f7f7f7;
    border-color: #d1d5db;
}

.auth-switch {
    text-align: center;
    margin-top: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.auth-switch a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    color: var(--color-primary-hover);
}

/* Password Strength Indicator */
.password-strength {
    margin-top: var(--spacing-sm);
}

.strength-bar {
    height: 4px;
    background: var(--color-border);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.strength-fill {
    height: 100%;
    width: 0%;
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.strength-fill.weak {
    width: 33%;
    background: var(--color-danger);
}

.strength-fill.medium {
    width: 66%;
    background: #F39C12;
}

.strength-fill.strong {
    width: 100%;
    background: var(--color-success);
}

.strength-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* Checkbox Styles */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: 3px;
    position: relative;
    transition: all var(--transition-fast);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-bg-primary);
    font-size: 12px;
    font-weight: bold;
}

.form-agree {
    margin-bottom: var(--spacing-md);
}

.form-agree a {
    color: var(--color-primary);
    text-decoration: none;
}

.form-agree a:hover {
    color: var(--color-primary-hover);
}

/* User Menu */
.user-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    min-width: 280px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    z-index: 1000;
    display: none;
    animation: dropdownSlideIn 0.2s ease;
}

.user-menu.active {
    display: block;
}

@keyframes dropdownSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-menu-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.user-avatar {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-primary);
    font-size: var(--font-size-lg);
}

.user-name {
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: var(--font-size-base);
}

.user-email {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.user-menu-items {
    padding: var(--spacing-sm);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.menu-item:hover {
    background: var(--color-bg-tertiary);
}

.menu-item i {
    width: 20px;
    color: var(--color-text-secondary);
}

.menu-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-sm) 0;
}

/* Two-Factor Authentication */
.two-factor-content {
    max-width: 520px;
}

.two-factor-setup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    color: var(--color-primary);
}

.qr-code p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    text-align: center;
    margin-top: var(--spacing-md);
}

.manual-entry {
    text-align: center;
}

.manual-entry p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.setup-code {
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    letter-spacing: 2px;
}

/* Auth Loading State */
.auth-loading {
    position: relative;
    overflow: hidden;
}

.auth-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Responsive Modals */
@media (max-width: 768px) {
    .modal-content {
        margin: var(--spacing-md);
        width: calc(100% - 2rem);
        max-height: calc(100vh - 2rem);
    }

    .modal-header {
        padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    }

    .modal-body {
        padding: var(--spacing-lg);
    }

    .two-factor-setup {
        padding: var(--spacing-lg);
    }

    .qr-placeholder {
        width: 150px;
        height: 150px;
    }

    .user-menu {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        max-width: none;
        animation: slideUp 0.3s ease;
    }

    @keyframes slideUp {
        from {
            transform: translateY(100%);
        }
        to {
            transform: translateY(0);
        }
    }
}

@media (max-width: 480px) {
    .modal-content {
        margin: var(--spacing-sm);
        width: calc(100% - 1rem);
    }

    .social-login {
        gap: var(--spacing-xs);
    }

    .btn-social {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
}