:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --surface: #111111;
    --surface-hover: #1a1a1a;
    --border: #222222;
    --border-hover: #333333;
    
    /* Greyscale status colors */
    --status-safe: #ffffff;
    --status-safe-bg: rgba(255, 255, 255, 0.1);
    
    --status-invalid: #666666;
    --status-invalid-bg: rgba(102, 102, 102, 0.2);
    
    --status-warning: #aaaaaa;
    --status-warning-bg: rgba(170, 170, 170, 0.15);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    line-height: 1.5;
}

.page-container {
    width: 100%;
    max-width: 600px;
}

.header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.main-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.main-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.search-form {
    margin-bottom: 2rem;
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.mail-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-secondary);
}

#email-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
}

#email-input:focus {
    outline: none;
    border-color: #555;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

#verify-btn {
    position: absolute;
    right: 0.5rem;
    padding: 0.6rem 1.25rem;
    background-color: var(--text-primary);
    color: var(--bg-color);
    border: none;
    border-radius: 6px;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform 0.1s ease, opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    height: calc(100% - 1rem);
}

#verify-btn:hover {
    opacity: 0.9;
}

#verify-btn:active {
    transform: scale(0.97);
}

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

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0, 0, 0, 0.2);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.hidden {
    display: none !important;
}

.error-message {
    padding: 1rem;
    background-color: var(--status-invalid-bg);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}

.welcome-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.welcome-state svg {
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Results Formatting */
.results-container {
    animation: fadeIn 0.4s ease forwards;
}

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

.result-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.status-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.badge-safe {
    background-color: var(--status-safe-bg);
    color: var(--status-safe);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-invalid {
    background-color: var(--status-invalid-bg);
    color: var(--status-invalid);
    border: 1px solid rgba(102, 102, 102, 0.4);
}

.badge-warning {
    background-color: var(--status-warning-bg);
    color: var(--text-primary);
    border: 1px solid rgba(170, 170, 170, 0.3);
}

#result-email {
    font-size: 1.25rem;
    font-weight: 500;
    word-break: break-all;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-color);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-weight: 600;
    font-size: 1.1rem;
}

.val-true { color: var(--text-primary); }
.val-false { color: var(--text-secondary); }

.detailed-metrics h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metrics-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.metrics-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 6px;
}

.metric-name {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.metric-badge {
    font-size: 0.8rem;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-weight: 600;
    background-color: var(--surface);
    border: 1px solid var(--border);
}

.metric-badge.yes {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.metric-badge.no {
    color: var(--text-secondary);
}

.footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--status-invalid);
    font-size: 0.85rem;
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .main-card {
        padding: 1.5rem;
    }
}