.gps-converter-ui {
    --gps-accent: #0ea5e9;
    --gps-accent-rgb: 14, 165, 233;
    --gps-accent-glow: rgba(14, 165, 233, 0.15);
    --gps-bg: #fff;
    --gps-bg-muted: #f8fafc;
    --gps-bg-surface: #f1f5f9;
    --gps-bg-overlay: #fdfdfd;
    --gps-text: #1e293b;
    --gps-text-muted: #64748b;
    --gps-text-dim: #94a3b8;
    --gps-border: #e2e8f0;
    --gps-border-light: #f1f5f9;
    --gps-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.08);
    --gps-danger: #ef4444;
    --gps-danger-bg: rgba(239, 68, 68, 0.1);

    width: 100%;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

[data-theme="dark"] .gps-converter-ui,
.theme-dark .gps-converter-ui {
    --gps-bg: #0f172a;
    --gps-bg-muted: #1e293b;
    --gps-bg-surface: #334155;
    --gps-bg-overlay: #1e293b;
    --gps-text: #f1f5f9;
    --gps-text-muted: #94a3b8;
    --gps-text-dim: #64748b;
    --gps-border: #334155;
    --gps-border-light: #1e293b;
    --gps-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.4);
}

.gps-converter-ui .tech-mega-card {
    background: var(--gps-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--gps-border);
    border-radius: 40px;
    box-shadow: var(--gps-shadow);
    position: relative;
    overflow: hidden;
}

.gps-converter-ui .tech-mega-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #0ea5e9, #6366f1, #0ea5e9);
    background-size: 200% 100%;
    animation: gradient-shift-gps 4s linear infinite;
    z-index: 10;
}

@keyframes gradient-shift-gps {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.gps-converter-ui .card-grid {
    display: grid;
    grid-template-columns: 400px 1fr;
    min-height: 700px;
}

.gps-converter-ui .config-sidebar {
    padding: 3.5rem 3rem;
    background: var(--gps-bg-overlay);
    border-right: 1px solid var(--gps-border-light);
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.gps-converter-ui .main-display {
    padding: 3.5rem 3rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
    background: var(--gps-bg);
}

.gps-converter-ui .divider {
    height: 1px;
    width: 100%;
    background: linear-gradient(90deg, transparent, var(--gps-border-light), transparent);
}

.gps-converter-ui .tech-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.gps-converter-ui .section-title {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--gps-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.gps-converter-ui .field-label {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--gps-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    display: block;
}

.gps-converter-ui .tech-input {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--gps-bg-surface);
    border: 1px solid var(--gps-border);
    border-radius: 16px;
    font-weight: 700;
    color: var(--gps-text);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.gps-converter-ui .tech-input:focus {
    outline: none;
    border-color: var(--gps-accent);
    box-shadow: 0 0 0 4px var(--gps-accent-glow);
    background: var(--gps-bg);
}

.gps-converter-ui .mode-switch {
    display: flex;
    background: var(--gps-bg-surface);
    padding: 0.4rem;
    border-radius: 18px;
    gap: 0.25rem;
}

.gps-converter-ui .mode-btn {
    flex: 1;
    padding: 0.75rem;
    border-radius: 14px;
    border: none;
    background: transparent;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--gps-text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.gps-converter-ui .mode-btn.active {
    background: var(--gps-bg);
    color: var(--gps-accent);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.gps-converter-ui .map-container {
    max-width: 100%;
    height: 400px;
    border-radius: 32px;
    overflow: hidden;
    background: var(--gps-bg-surface);
    border: 1px solid var(--gps-border-light);
}

.gps-converter-ui .results-area {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.gps-converter-ui .result-box {
    background: var(--gps-bg-overlay);
    border: 1px solid var(--gps-border-light);
    border-radius: 28px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: all 0.3s ease;
}

.gps-converter-ui .result-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
    border-color: var(--gps-accent);
}

.gps-converter-ui .res-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gps-converter-ui .copy-btn {
    background: var(--gps-bg-surface);
    border: 1px solid var(--gps-border);
    color: var(--gps-text-muted);
    padding: 0.5rem 1rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.gps-converter-ui .copy-btn:hover {
    background: var(--gps-accent);
    color: white;
    border-color: var(--gps-accent);
}

.gps-converter-ui .val-display {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--gps-text);
    word-break: break-all;
    letter-spacing: -0.01em;
}

.gps-converter-ui .history-item {
    padding: 1.25rem 1.5rem;
    background: var(--gps-bg-surface);
    border-radius: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.gps-converter-ui .history-item:hover {
    background: var(--gps-bg);
    border-color: var(--gps-accent);
    transform: translateX(5px);
}

.gps-converter-ui .hist-info {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    flex: 1;
}

.gps-converter-ui .hist-coords {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--gps-text);
}

.gps-converter-ui .hist-time {
    font-size: 0.7rem;
    color: var(--gps-text-dim);
    font-weight: 700;
    text-transform: uppercase;
}

.gps-converter-ui .action-btn {
    background: var(--gps-bg-overlay);
    border: 1px solid var(--gps-border);
    padding: 0.6rem;
    border-radius: 12px;
    color: var(--gps-text-dim);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.gps-converter-ui .no-history {
    text-align: center;
    padding: 3rem;
    color: var(--gps-text-dim);
    font-style: italic;
    font-size: 0.9rem;
}

@media (max-width: 1200px) {
    .gps-converter-ui .card-grid {
        grid-template-columns: 1fr;
    }
    .gps-converter-ui .config-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--gps-border-light);
    }
}

@media (max-width: 600px) {
    .gps-converter-ui { padding: 0.5rem; }
    .gps-converter-ui .config-sidebar, 
    .gps-converter-ui .main-display { padding: 2rem 1.5rem; }
    .gps-converter-ui .results-area { grid-template-columns: 1fr; }
}