/* CSS Variables */
:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #141b3d;
    --bg-card: #1a2249;
    --bg-hover: #222d5a;

    --text-primary: #ffffff;
    --text-secondary: #a0a8c8;
    --text-muted: #6b7390;

    --accent-primary: #4c6fff;
    --accent-hover: #3d5aef;
    --accent-light: #5a7aff;

    --success: #00d97e;
    --warning: #f7b924;
    --danger: #f04461;
    --info: #39afd1;

    --border-color: #2a3562;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

#app {
    min-height: 100vh;
    padding-bottom: 20px;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.shield-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
}

.logo h1 {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pro-badge {
    padding: 6px 12px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #000;
    border: none;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.pro-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

/* Main Content */
main {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* Screen Management */
.screen {
    display: none;
    animation: fadeIn 0.3s ease;
}

.screen.active {
    display: block;
}

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

/* Hero Section */
.hero {
    text-align: center;
    padding: 30px 0;
}

.hero h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* Search Container */
.search-container {
    margin: 30px 0;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 12px;
}

input[type="email"] {
    width: 100%;
    padding: 16px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 16px;
    transition: var(--transition);
}

input[type="email"]:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(76, 111, 255, 0.1);
}

input[type="email"]::placeholder {
    color: var(--text-muted);
}

.privacy-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-light));
    color: white;
    box-shadow: 0 4px 15px rgba(76, 111, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(76, 111, 255, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

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

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

.btn-large {
    padding: 18px 32px;
    font-size: 17px;
    width: 100%;
}

.btn-loader {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-loader {
    display: block;
}

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

/* Quick Stats */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 30px 0;
}

.stat-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin: 30px 0;
}

.feature-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--accent-primary);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* Ad Container */
.ad-container {
    margin: 40px 0;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.ad-placeholder {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 2px dashed var(--border-color);
}

.ad-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ad-content {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Results Screen */
.results-header {
    text-align: center;
    margin-bottom: 30px;
}

.results-header h2 {
    font-size: 24px;
    margin-bottom: 8px;
}

.scanned-email {
    font-size: 14px;
    color: var(--text-secondary);
}

.scanned-email span {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Security Score */
.security-score {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    margin-bottom: 30px;
    text-align: center;
}

.score-indicator {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    font-weight: 700;
    position: relative;
}

.score-indicator::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(135deg, currentColor, transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.score-low {
    color: var(--success);
    background: rgba(0, 217, 126, 0.1);
}

.score-medium {
    color: var(--warning);
    background: rgba(247, 185, 36, 0.1);
}

.score-high {
    color: var(--danger);
    background: rgba(240, 68, 97, 0.1);
}

.score-critical {
    color: #d63031;
    background: rgba(214, 48, 49, 0.1);
}

.score-label {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.score-description {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Breach Results */
.breach-results {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 30px;
}

.breach-card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid;
    transition: var(--transition);
}

.breach-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.breach-card.severity-low {
    border-color: var(--success);
}

.breach-card.severity-medium {
    border-color: var(--warning);
}

.breach-card.severity-high {
    border-color: var(--danger);
}

.breach-card.severity-critical {
    border-color: #d63031;
}

.breach-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 12px;
}

.breach-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.breach-date {
    font-size: 13px;
    color: var(--text-muted);
}

.severity-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.severity-badge.low {
    background: rgba(0, 217, 126, 0.2);
    color: var(--success);
}

.severity-badge.medium {
    background: rgba(247, 185, 36, 0.2);
    color: var(--warning);
}

.severity-badge.high {
    background: rgba(240, 68, 97, 0.2);
    color: var(--danger);
}

.severity-badge.critical {
    background: rgba(214, 48, 49, 0.2);
    color: #d63031;
}

.breach-details {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.data-types {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.data-tag {
    padding: 4px 10px;
    background: var(--bg-hover);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Breach List */
.breach-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.screen-header {
    text-align: center;
    margin-bottom: 30px;
}

.screen-header h2 {
    font-size: 24px;
    margin-bottom: 8px;
}

.screen-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Tips List */
.tips-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tip-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.tip-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.tip-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.tip-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* Pro Screen */
.pro-header {
    text-align: center;
    margin-bottom: 40px;
}

.pro-badge-large {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #000;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
}

.pro-header h2 {
    font-size: 28px;
    margin-bottom: 12px;
}

.pro-price {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-primary);
}

.pro-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.pro-feature {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.check-icon {
    width: 24px;
    height: 24px;
    background: var(--success);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.pro-feature h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.pro-feature p {
    font-size: 14px;
    color: var(--text-secondary);
}

.pro-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.pro-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 1000;
}

.loading-overlay.active {
    display: flex;
}

.loader {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 20px;
}

.loading-overlay p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 90%;
    width: 400px;
}

.toast {
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast.success {
    border-color: var(--success);
}

.toast.error {
    border-color: var(--danger);
}

.toast.info {
    border-color: var(--info);
}

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

/* Responsive Design */
@media (max-width: 600px) {
    main {
        padding: 16px;
    }

    .hero h2 {
        font-size: 24px;
    }

    .quick-stats {
        grid-template-columns: 1fr;
    }

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

    .input-group {
        flex-direction: column;
    }

    .pro-header h2 {
        font-size: 24px;
    }

    .pro-price {
        font-size: 28px;
    }
}

/* Password Checker Styles */
.password-input-container {
    margin: 30px 0;
}

.password-input-container .input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.password-input-container input {
    flex: 1;
}

.password-input-container .btn-secondary {
    padding: 16px;
    min-width: 50px;
}

.password-results {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin: 20px 0;
}

.password-strength-container {
    margin-bottom: 24px;
}

.strength-bar-bg {
    width: 100%;
    height: 12px;
    background: var(--bg-hover);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 12px;
}

.strength-bar {
    height: 100%;
    width: 0%;
    transition: width 0.6s ease, background-color 0.3s ease;
    border-radius: 6px;
}

.strength-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.strength-label {
    font-size: 18px;
    font-weight: 600;
}

.strength-score {
    font-size: 16px;
    color: var(--text-secondary);
}

.password-feedback {
    margin-bottom: 24px;
    padding: 16px;
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
}

.password-feedback h4 {
    font-size: 16px;
    margin-bottom: 12px;
}

.password-feedback ul, .password-tips ul {
    padding-left: 20px;
    margin: 0;
}

.password-feedback li, .password-tips li {
    margin: 8px 0;
    color: var(--text-secondary);
}

.password-tips {
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.password-tips h4 {
    font-size: 16px;
    margin-bottom: 12px;
}

.pro-lock {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 2px dashed var(--border-color);
    margin: 30px 0;
}

.lock-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
}

.pro-lock p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Score Gauge Styles */
.score-gauge-container {
    margin: 20px auto;
    max-width: 200px;
}

.score-gauge {
    width: 100%;
    height: auto;
}

.gauge-fill {
    transition: stroke-dasharray 1s ease-out;
}

.gauge-fill.score-low {
    color: var(--success);
}

.gauge-fill.score-medium {
    color: var(--warning);
}

.gauge-fill.score-high {
    color: var(--danger);
}

.gauge-fill.score-critical {
    color: #d63031;
}

.score-number {
    font-size: 36px;
    font-weight: 700;
    fill: var(--text-primary);
}

.score-max {
    font-size: 14px;
    fill: var(--text-secondary);
}

.share-btn {
    margin-top: 16px;
    width: 100%;
}

/* Ad Banner Styles */
.ad-banner {
    margin: 20px 0;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    text-align: center;
}

.ad-banner .ad-label {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-hover) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 16px;
    margin: 8px 0;
}

.skeleton-title {
    height: 24px;
    margin: 12px 0;
    width: 60%;
}

.skeleton-card {
    height: 120px;
    margin: 16px 0;
}

/* Smooth Animations */
.feature-card, .breach-card, .tip-card, .pro-feature {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:active {
    transform: scale(0.97);
}

input:focus, button:focus {
    animation: pulse-border 0.5s ease;
}

@keyframes pulse-border {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(76, 111, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 6px rgba(76, 111, 255, 0);
    }
}

/* Enhanced Transitions */
.screen {
    animation: slideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Dark Mode Enhancements */
@media (prefers-color-scheme: dark) {
    body {
        background: var(--bg-primary);
    }
}

/* Improved Responsive Grid */
@media (max-width: 600px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .score-gauge-container {
        max-width: 180px;
    }
}