:root[data-theme="dark"] {
    --bg-main: #0f172a;
    --bg-panel: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #334155;
    --success: #10b981;
    --error: #ef4444;
    --canvas-bg: #0f172a;
    --grid-color: rgba(255, 255, 255, 0.05);
    --input-bg: #0f172a;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

:root[data-theme="light"] {
    --bg-main: #f1f5f9;
    --bg-panel: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --accent-color: #4f46e5;
    --accent-hover: #4338ca;
    --border-color: #e2e8f0;
    --success: #059669;
    --error: #dc2626;
    --canvas-bg: #f8fafc;
    --grid-color: rgba(0, 0, 0, 0.05);
    --input-bg: #f8fafc;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 20px;
}

code {
    background-color: var(--border-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
}


.app-wrapper {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    background-color: var(--bg-panel);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.header-title {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--accent-color);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

.icon-btn:hover {
    color: var(--accent-color);
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 20px;
    align-items: stretch;
}


.panel {
    background-color: var(--bg-panel);
    border-radius: 16px;
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.panel-header h2 {
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}


.canvas-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: var(--canvas-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    max-width: 100%;
    max-height: 100%;
}

.radius-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--accent-color);
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 1.1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}


.control-group {
    margin-top: 25px;
}

.control-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--accent-color);
    cursor: pointer;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 0.85rem;
    color: var(--text-muted);
}


.info-box {
    display: flex;
    gap: 15px;
    background-color: rgba(59, 130, 246, 0.1);
    padding: 15px;
    border-radius: 12px;
    border-left: 4px solid var(--accent-color);
    margin-bottom: 25px;
}

.icon-info {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 3px;
}

.hint {
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.input-card {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
    transition: border-color 0.3s;
}

.input-card label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

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

.input-with-icon i {
    position: absolute;
    left: 15px;
    color: var(--text-muted);
}

.input-with-icon input {
    width: 100%;
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 12px 15px 12px 40px;
    border-radius: 8px;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: all 0.2s;
}

.input-with-icon input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.status-icon {
    position: absolute;
    right: 15px;
    font-size: 1.2rem;
}


.primary-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: background-color 0.2s, transform 0.1s;
    margin-top: 10px;
}

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

.primary-btn:active {
    transform: scale(0.98);
}


.alert {
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    margin-top: 15px;
}

.alert.hidden {
    display: none;
}

.alert.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.alert.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
}


.history-section {
    margin-top: 30px;
    flex-grow: 1;
}

.history-section h3 {
    margin-bottom: 15px;
    color: var(--text-muted);
    font-size: 1rem;
}

.table-container {
    max-height: 200px;
    overflow-y: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

th, td {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-main);
    position: sticky;
    top: 0;
}

.status-badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--error);
}


@media (max-width: 900px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}
p{
    font-size: 1.1em;
}