* {
    box-sizing: border-box;
}

:root {
    --bg-gradient-1: #f0f4f8;
    --bg-gradient-2: #d9e2ec;
    --container-bg: #fff;
    --container-shadow: rgba(0,0,0,0.1);
    --text-primary: #1a1a2e;
    --text-secondary: #333;
    --text-muted: #666;
    --input-bg: #f5f5f5;
    --input-border: #e0e0e0;
    --input-hover: #e8e8e8;
    --accent: #1a1a2e;
    --accent-gradient-1: #1a1a2e;
    --accent-gradient-2: #16213e;
    --focus-ring: rgba(26, 26, 46, 0.4);
    --success: #4caf50;
    --hosting-color: #6c63ff;
    --dns-color: #ff6b6b;
    --mail-color: #4ecdc4;
}

[data-theme="dark"] {
    --bg-gradient-1: #1a1a2e;
    --bg-gradient-2: #16213e;
    --container-bg: #2d2d44;
    --container-shadow: rgba(0,0,0,0.4);
    --text-primary: #f0f0f0;
    --text-secondary: #e0e0e0;
    --text-muted: #a0a0a0;
    --input-bg: #3d3d5c;
    --input-border: #4d4d6c;
    --input-hover: #4a4a6a;
    --accent: #6c63ff;
    --accent-gradient-1: #6c63ff;
    --accent-gradient-2: #5a52d5;
    --focus-ring: rgba(108, 99, 255, 0.4);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-gradient-1: #1a1a2e;
        --bg-gradient-2: #16213e;
        --container-bg: #2d2d44;
        --container-shadow: rgba(0,0,0,0.4);
        --text-primary: #f0f0f0;
        --text-secondary: #e0e0e0;
        --text-muted: #a0a0a0;
        --input-bg: #3d3d5c;
        --input-border: #4d4d6c;
        --input-hover: #4a4a6a;
        --accent: #6c63ff;
        --accent-gradient-1: #6c63ff;
        --accent-gradient-2: #5a52d5;
        --focus-ring: rgba(108, 99, 255, 0.4);
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 100%);
    min-height: 100vh;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 20px 80px;
    transition: background 0.3s;
}

.container {
    background: var(--container-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 20px 60px var(--container-shadow);
    max-width: 780px;
    width: 100%;
    transition: background 0.3s, box-shadow 0.3s;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
}

.header-title h1 {
    margin: 0;
    color: var(--text-primary);
    font-size: 28px;
    transition: color 0.3s;
}

.tagline {
    margin: 4px 0 0 0;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 400;
    transition: color 0.3s;
}

.theme-toggle {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 30px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 18px;
    transition: background 0.3s, border-color 0.3s;
}

.theme-toggle:hover {
    background: var(--input-hover);
}

.search-form {
    margin-bottom: 20px;
}

.search-input-wrapper {
    display: flex;
    gap: 10px;
}

.search-input-wrapper input {
    flex: 1;
    min-width: 0;
    padding: 15px 20px;
    font-size: 16px;
    border: 2px solid var(--input-border);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s, background 0.3s;
}

.search-input-wrapper input:focus {
    border-color: var(--accent);
}

.search-input-wrapper input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    flex-shrink: 0;
    padding: 15px 20px;
    background: linear-gradient(135deg, var(--accent-gradient-1) 0%, var(--accent-gradient-2) 100%);
    color: #fff;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

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

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--input-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin: 0 auto 15px;
    animation: spin 1s linear infinite;
}

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

.hidden {
    display: none !important;
}

.error {
    background: rgba(244, 67, 54, 0.1);
    border: 2px solid #f44336;
    border-radius: 12px;
    padding: 15px 20px;
    color: #f44336;
    text-align: center;
}

.not-registered {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.not-registered .material-symbols-outlined {
    font-size: 64px;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.not-registered h2 {
    margin: 0 0 10px 0;
    color: var(--text-primary);
    font-size: 20px;
}

.not-registered p {
    margin: 0;
    color: var(--text-muted);
}

.results {
    animation: fadeIn 0.3s ease;
}

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

.result-card {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    padding: 20px;
    transition: background 0.3s, border-color 0.3s;
}

.main-card {
    text-align: center;
    margin-bottom: 20px;
}

.domain-heading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 0 0 10px 0;
    color: var(--text-primary);
    font-size: 24px;
    word-break: break-all;
}

.domain-link {
    color: var(--text-muted);
    text-decoration: none;
    opacity: 0.5;
    transition: opacity 0.2s, color 0.2s;
    display: flex;
    align-items: center;
}

.domain-link:hover {
    opacity: 1;
    color: var(--accent);
}

.domain-link .material-symbols-outlined {
    font-size: 20px;
}

.ip-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

@media (max-width: 550px) {
    .container {
        padding: 20px;
    }

    .header {
        margin-bottom: 20px;
    }

    .header-title h1 {
        font-size: 22px;
    }

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

.result-grid .result-card {
    text-align: center;
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    color: #fff;
}

.card-icon.hosting {
    background: var(--hosting-color);
}

.card-icon.dns {
    background: var(--dns-color);
}

.card-icon.mail {
    background: var(--mail-color);
}

.card-icon .material-symbols-outlined {
    font-size: 28px;
}

.result-grid h3 {
    margin: 0 0 8px 0;
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.provider {
    margin: 0;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    word-break: break-word;
}

.details-section {
    margin-top: 20px;
}

details {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    overflow: hidden;
}

summary {
    padding: 15px 20px;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    user-select: none;
    transition: background 0.2s;
}

summary:hover {
    background: var(--input-hover);
}

.details-content {
    padding: 0 20px 20px;
}

.detail-group {
    margin-bottom: 20px;
}

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

.detail-group h4 {
    margin: 0 0 10px 0;
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.detail-group ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.detail-group li {
    padding: 5px 0;
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
    font-size: 13px;
    word-break: break-all;
}

.detail-group pre {
    margin: 0;
    padding: 15px;
    background: var(--container-bg);
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.email-security-section {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    transition: background 0.3s, border-color 0.3s;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 15px 0;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
}

.section-title .material-symbols-outlined {
    font-size: 20px;
    color: var(--accent);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

@media (max-width: 550px) {
    .security-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.security-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    background: var(--container-bg);
    border-radius: 8px;
    text-align: center;
}

.security-icon {
    font-size: 28px;
    line-height: 1;
    color: var(--text-muted);
}

.security-item.success .security-icon {
    color: #4caf50;
}

.security-item.warning .security-icon {
    color: #ff9800;
}

.security-item.error .security-icon {
    color: #f44336;
}

.security-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.security-value {
    font-size: 12px;
    color: var(--text-secondary);
    word-break: break-word;
}

.ssl-section {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    transition: background 0.3s, border-color 0.3s;
}

.ssl-info {
    background: var(--container-bg);
    border-radius: 8px;
    padding: 15px;
}

.ssl-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.ssl-icon {
    font-size: 28px;
    line-height: 1;
    color: var(--text-muted);
}

.ssl-status.valid .ssl-icon {
    color: #4caf50;
}

.ssl-status.warning .ssl-icon {
    color: #ff9800;
}

.ssl-status.invalid .ssl-icon,
.ssl-status.none .ssl-icon {
    color: #f44336;
}

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

.ssl-status.valid .ssl-text {
    color: var(--success);
}

.ssl-status.warning .ssl-text {
    color: #ff9800;
}

.ssl-status.invalid .ssl-text,
.ssl-status.none .ssl-text {
    color: #f44336;
}

.ssl-details {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.ssl-details div {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px solid var(--input-border);
}

.ssl-details div:last-child {
    border-bottom: none;
}

.ssl-details .label {
    color: var(--text-muted);
}

.ssl-details .value {
    font-weight: 500;
    text-align: right;
}

.ssl-details .value.expiring {
    color: #ff9800;
}

.ssl-details .value.expired {
    color: #f44336;
}

.footer {
    position: fixed;
    bottom: 15px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    opacity: 0.6;
    transition: opacity 0.2s, color 0.3s;
}

.footer:hover {
    opacity: 1;
}

.footer a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--accent);
    text-decoration: underline;
}