/* ============================================
   Small App Tools shared theme
   Shared design tokens + component styles
   ============================================ */

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #f093fb;
    --dark: #1e1e1e;
    --light: #ffffff;
    --gray-light: #f8f9fa;
    --gray-dark: #2d2d2d;
    --panel: #2d2d2d;
    --border: #3d3d3d;
    --text-muted: #a0aec0;
    --text-dim: #718096;
    --success: #48bb78;
    --success-dark: #38a169;
    --danger: #f56565;
    --danger-dark: #e53e3e;
    --error-bg: #fed7d7;
    --error-text: #c53030;
    --success-bg: #c6f6d5;
    --success-text: #22543d;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    --border-light: #e2e8f0;
    --text-body: #666;
    --text-dark: #333;
}

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

body {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

/* Container */
.container {
    background: var(--dark);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
}

h1 {
    color: var(--light);
    text-align: center;
}

.subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 40px;
}

/* Forms */
label {
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 600;
}

input[type="number"] {
    padding: 12px;
    background: var(--panel);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--light);
    font-size: 1em;
    transition: border-color 0.3s;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
}

.input-wrapper {
    display: flex;
    gap: 10px;
    align-items: center;
}

.unit-label {
    color: var(--text-dim);
    font-weight: 600;
}

/* Buttons */
.button-group {
    display: flex;
    gap: 10px;
}

button {
    flex: 1;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

/* Alerts */
.error {
    background: var(--error-bg);
    border: 2px solid var(--danger);
    color: var(--error-text);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none;
}

.error.show {
    display: block;
}

.success {
    background: var(--success-bg);
    border: 2px solid var(--success);
    color: var(--success-text);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none;
}

.success.show {
    display: block;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--dark);
    padding: 30px;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--border);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h2 {
    color: var(--light);
    font-size: 1.5em;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5em;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
}

.close-btn:hover {
    color: var(--light);
}

.embed-option {
    margin-bottom: 20px;
}

.embed-option label {
    color: var(--text-muted);
    margin-bottom: 8px;
    display: block;
    font-weight: 600;
}

.embed-code {
    background: var(--panel);
    padding: 12px;
    border-radius: 8px;
    border: 2px solid var(--border);
    color: var(--success);
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
    word-break: break-all;
    max-height: 120px;
    overflow-y: auto;
    margin-bottom: 10px;
}

.copy-btn,
.copy-embed-btn {
    width: 100%;
    padding: 10px;
    background: var(--primary);
    color: var(--light);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
    margin-top: 10px;
}

.copy-btn:hover,
.copy-embed-btn:hover {
    background: #5568d3;
}

.copy-btn.copied,
.copy-embed-btn.copied {
    background: var(--success);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 1.8em;
    }

    .button-group {
        flex-direction: column;
    }
}