:root {
    --bg: #f5f7fa;
    --panel-bg: #ffffff;
    --primary: #f90;
    --primary-hover: #d78202;
    --border: #d1d5db;
    --text: #111827;
    --muted: #6b7280;
    --error-bg: #fef2f2;
    --error-border: #fecaca;
    --error-text: #b91c1c;
    --secret-bg: #0f172a;
    --secret-text: #e5e7eb;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 40px 16px;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

h1 {
    margin-top: 0;
    font-size: 1.8rem;
    margin-bottom: 0.25rem;
}

.subtitle {
    margin-top: 0;
    margin-bottom: 1.5rem;
    color: var(--muted);
}

.panel {
    background: var(--panel-bg);
    border-radius: 12px;
    padding: 24px 20px;
    box-shadow: 0 10px 25px rgba(15,23,42,0.08);
}

label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 4px;
    color: var(--muted);
}

textarea,
input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 0.95rem;
    font-family: inherit;
}

textarea {
    resize: vertical;
}

.field-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 12px;
}

.field-group .field {
    flex: 1 1 180px;
}

.options {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.9rem;
}

.options label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text);
}

.password-generator {
    margin-top: 50px;
    padding-top: 25px;
    border-top: 1px solid var(--border);
    margin-bottom: 50px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--border);
}

.password-generator h3 {
    margin-top: 0;
    font-size: 1rem;
}

.generator-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.generator-controls label {
    display: flex;
    align-items: center;
    gap: 4px;
}

.generator-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.generator-actions input[type="text"] {
    flex: 1 1 200px;
}

.actions {
    margin-top: 20px;
}

button {
    border-radius: 999px;
    border: none;
    padding: 8px 16px;
    font-size: 0.95rem;
    cursor: pointer;
    background: var(--primary);
    color: white;
    font-weight: 500;
}

button:hover {
    background: var(--primary-hover);
}

button[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

.result {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
}

.result-field {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.result-field input[type="text"] {
    flex: 1 1 200px;
}

.error {
    margin-top: 16px;
    padding: 10px 12px;
    border-radius: 8px;
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    color: var(--error-text);
    font-size: 0.9rem;
}

.meta {
    list-style: none;
    padding: 0;
    margin: 12px 0;
    font-size: 0.9rem;
    color: var(--muted);
}

.secret-content {
    margin-top: 16px;
    background: var(--secret-bg);
    color: var(--secret-text);
    padding: 16px;
    border-radius: 8px;
    white-space: pre-wrap;
    font-family: "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.9rem;
}

footer {
    margin-top: 24px;
    font-size: 0.8rem;
    color: var(--muted);
    text-align: center;
}

@media (max-width: 640px) {
    body {
        padding: 20px 10px;
    }

    .panel {
        padding: 16px 14px;
    }

    h1 {
        font-size: 1.4rem;
    }
}

.secondary-btn {
    background: #6b7280; /* gris neutre */
    color: white;
}

.secondary-btn:hover {
    background: #4b5563;
}