:root {
    --primary:        #1a6b8a;
    --primary-light:  #2d9cbb;
    --accent:         #3ac9a8;
    --accent-dark:    #2ab595;
    --bg:             #f2f6fa;
    --surface:        #ffffff;
    --border:         #dce4ed;
    --text:           #1a2535;
    --text-muted:     #6b7c93;
    --warn-bg:        #fff8e6;
    --warn-border:    #e8a000;
    --warn-text:      #a06000;
    --ok-bg:          #e8f8f3;
    --ok-border:      #3ac9a8;
    --ok-text:        #1a7a5e;
    --err-bg:         #fff0f0;
    --err-border:     #e05050;
    --radius:         10px;
    --shadow:         0 2px 18px rgba(26, 107, 138, 0.09);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Header ────────────────────────────────────────────── */

.site-header {
    background: var(--primary);
    color: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,.18);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
}

.brand-icon  { font-size: 22px; }
.brand-title { font-size: 19px; font-weight: 600; letter-spacing: .3px; }
.header-sub  { font-size: 12.5px; opacity: .78; padding-left: 32px; }

/* ── Main ──────────────────────────────────────────────── */

.main-content { flex: 1; padding: 40px 0 48px; }

/* ── Alert ─────────────────────────────────────────────── */

.alert {
    padding: 13px 18px;
    border-radius: 8px;
    margin-bottom: 24px;
    font-size: 14px;
}
.alert-error {
    background: var(--err-bg);
    border: 1px solid var(--err-border);
    color: #b52b2b;
}

/* ── Form card ─────────────────────────────────────────── */

.generate-form {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 36px 36px 28px;
    margin-bottom: 28px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 0;
}

.form-group { margin-bottom: 20px; }

label {
    display: block;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 7px;
}

.required { color: var(--primary-light); margin-left: 2px; }

.form-select,
.form-input,
.form-textarea {
    width: 100%;
    padding: 10px 13px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text);
    background: #fafcfe;
    transition: border-color .18s, box-shadow .18s;
    outline: none;
    appearance: auto;
}

.form-select:focus,
.form-input:focus,
.form-textarea:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(45,156,187,.13);
    background: #fff;
}

.form-textarea {
    resize: vertical;
    min-height: 130px;
}

.form-submit { margin-top: 24px; text-align: center; }

.btn-generate {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 13px 52px;
    border-radius: 8px;
    font-size: 15.5px;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: .3px;
    transition: background .18s, transform .1s;
}

.btn-generate:hover  { background: var(--primary-light); transform: translateY(-1px); }
.btn-generate:active { transform: translateY(0); }

/* ── Info block ────────────────────────────────────────── */

.info-block {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 24px 28px;
    box-shadow: var(--shadow);
}

.info-block h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.info-block ol {
    padding-left: 20px;
    color: var(--text-muted);
    font-size: 13.5px;
}

.info-block li { margin-bottom: 7px; }

.info-note {
    margin-top: 14px;
    font-size: 12.5px;
    color: var(--text-muted);
    font-style: italic;
}

/* ── Result page ───────────────────────────────────────── */

.result-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}

.meta-tag {
    background: var(--primary);
    color: #fff;
    padding: 4px 13px;
    border-radius: 20px;
    font-size: 12.5px;
    font-weight: 500;
}

.meta-tag-format { background: var(--accent); }

.meta-sep { color: var(--text-muted); font-size: 18px; }

/* Safety blocks */

.safety-block {
    border-radius: var(--radius);
    padding: 18px 22px;
    margin-bottom: 26px;
    font-size: 14px;
}

.safety-ok {
    background: var(--ok-bg);
    border: 1.5px solid var(--ok-border);
    color: var(--ok-text);
}

.safety-ok-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.safety-icon-ok {
    font-size: 17px;
    color: var(--accent-dark);
}

.safety-ok p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.safety-warning {
    background: var(--warn-bg);
    border: 1.5px solid var(--warn-border);
}

.safety-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    color: var(--warn-text);
    font-size: 14px;
}

.safety-icon { font-size: 17px; }

.warning-list { list-style: none; margin-bottom: 12px; }

.warning-list li {
    padding: 8px 12px;
    background: rgba(255,255,255,.65);
    border-radius: 6px;
    margin-bottom: 7px;
    font-size: 13px;
    line-height: 1.5;
}

.warning-phrase { font-weight: 600; color: var(--warn-text); }
.warning-text   { color: var(--text-muted); margin-left: 4px; }

.safety-note {
    font-size: 12.5px;
    color: var(--warn-text);
    font-style: italic;
}

/* Result block */

.result-block {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 22px;
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 22px;
    border-bottom: 1px solid var(--border);
    background: #f6fafd;
}

.result-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
}

.btn-copy {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 7px 20px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background .18s, transform .1s;
}

.btn-copy:hover  { background: var(--accent-dark); transform: translateY(-1px); }
.btn-copy.copied { background: #27ae60; }

.result-textarea {
    width: 100%;
    min-height: 340px;
    padding: 22px 24px;
    border: none;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13.5px;
    line-height: 1.75;
    color: var(--text);
    background: #fff;
    resize: vertical;
    outline: none;
}

/* Actions */

.result-actions { margin-bottom: 26px; }

.btn-back {
    display: inline-block;
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 0;
    transition: color .18s;
}

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

/* Edit note */

.edit-note {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 22px;
    font-size: 13.5px;
}

.edit-note strong {
    display: block;
    font-size: 13.5px;
    color: var(--text);
    margin-bottom: 10px;
}

.edit-note ul { padding-left: 20px; color: var(--text-muted); }
.edit-note li { margin-bottom: 6px; }
.edit-note code {
    background: #eef2f7;
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--primary);
}

/* ── Footer ────────────────────────────────────────────── */

.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 18px 0;
    text-align: center;
    font-size: 12.5px;
    color: var(--text-muted);
}

/* ── Responsive ────────────────────────────────────────── */

@media (max-width: 620px) {
    .form-grid        { grid-template-columns: 1fr; }
    .generate-form    { padding: 22px 18px 20px; }
    .brand-title      { font-size: 16px; }
    .result-textarea  { min-height: 260px; padding: 16px 16px; }
    .result-header    { flex-direction: column; align-items: flex-start; gap: 10px; }
}