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

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --card-border: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --success-color: #10b981;
    --error-color: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

main {
    flex: 1;
}

.ip-section {
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.ip-display .label {
    display: block;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.9;
    margin-bottom: 0.75rem;
}

.ip-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.ip-address {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', monospace;
    letter-spacing: 0.05em;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.copy-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.copy-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.copy-btn:active:not(:disabled) {
    transform: translateY(0);
}

.copy-feedback {
    display: block;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    min-height: 1.5rem;
}

.copy-feedback.success {
    color: #86efac;
}

.copy-feedback.error {
    color: #fca5a5;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.info-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.info-icon svg {
    color: white;
}

.info-card h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.info-card p {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    word-break: break-word;
}

.map-section {
    margin-bottom: 2rem;
}

.map-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.map-container {
    width: 100%;
    height: 350px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.map-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-secondary);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.refresh-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    max-width: 300px;
    margin: 0 auto 2rem;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

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

.refresh-btn svg {
    transition: transform 0.3s ease;
}

.refresh-btn:hover svg {
    transform: rotate(180deg);
}

footer {
    text-align: center;
    padding: 1.5rem 0;
    margin-top: auto;
    border-top: 1px solid var(--card-border);
}

footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Loading animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Error state */
.error-state {
    color: var(--error-color);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .ip-section {
        padding: 1.5rem 1rem;
    }

    .ip-address {
        font-size: 1.75rem;
    }

    .copy-btn {
        padding: 0.6rem 1rem;
    }

    .copy-text {
        display: none;
    }

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

    .map-container {
        height: 280px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.75rem;
    }

    .ip-address {
        font-size: 1.5rem;
    }

    .info-card {
        padding: 1.25rem;
    }
}

/* Dark mode is default, but add light mode support */
@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #f8fafc;
        --card-bg: #ffffff;
        --card-border: #e2e8f0;
        --text-primary: #0f172a;
        --text-secondary: #64748b;
    }

    .ip-section {
        box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    }

    .info-card:hover {
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    }
}