/* ════════════════════════════════════════════════════════════════
   Advanced Random Generator — tool-specific styles
   Reuses global tokens from /assets/css/main.css (:root variables).
   Prefixed .rng- to avoid clashing with site-wide classes.
═══════════════════════════════════════════════════════════════════ */

.rng { background: var(--color-bg-light2); }

/* ── Intro ───────────────────────────────────────────────────── */
.rng-hero {
    padding: 3.5rem 0 2rem;
    text-align: center;
}
.rng-hero .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    background: var(--color-accent-muted);
    border: 1px solid var(--color-accent-border);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-pill);
    margin-bottom: 1.1rem;
}
.rng-hero h1 {
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    font-weight: 800;
    color: var(--color-text-dark);
    margin-bottom: 0.9rem;
}
.rng-hero-sub {
    max-width: 740px;
    margin: 0 auto;
    font-size: 1.02rem;
    line-height: 1.75;
    color: var(--color-text-body);
}
.rng code {
    background: var(--color-bg-light3);
    padding: 0.1rem 0.4rem;
    border-radius: 6px;
    font-size: 0.9em;
    color: var(--color-text-dark);
}

/* ── Generator grid ──────────────────────────────────────────── */
.rng-section { padding: 1rem 0 4rem; }
.rng-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 2rem;
    align-items: start;
}
.rng-form,
.rng-result {
    background: #fff;
    border: 1px solid var(--color-border-card);
    border-radius: var(--radius-lg);
    padding: 1.6rem;
    box-shadow: var(--shadow-card);
}
.rng-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 1.4rem;
}

/* ── Tabs ─────────────────────────────────────────────────────── */
.rng-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.3rem;
    border-bottom: 1px solid var(--color-border-card);
}
.rng-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-body);
    background: var(--color-bg-light2);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-pill);
    padding: 0.45rem 0.85rem;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.rng-tab i { font-size: 0.8rem; }
.rng-tab:hover {
    border-color: var(--color-accent);
    color: var(--color-accent-dark);
}
.rng-tab.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

/* ── Panels ───────────────────────────────────────────────────── */
.rng-panel { display: none; }
.rng-panel.active { display: block; animation: rng-fade 0.2s ease; }
@keyframes rng-fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ── Fields ───────────────────────────────────────────────────── */
.rng-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.rng-field { margin-bottom: 1.2rem; }
.rng-field label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 0.5rem;
}
.rng-field .optional { color: var(--color-text-mute2); font-weight: 400; }
.rng-val {
    color: var(--color-accent-dark);
    font-variant-numeric: tabular-nums;
}
.rng-field input[type="number"],
.rng-field input[type="text"],
.rng-field select {
    width: 100%;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text-dark);
    border: 1px solid var(--color-form-fields);
    border-radius: var(--radius-sm);
    padding: 0.7rem 0.9rem;
    background: #fff;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.rng-field input[type="text"] { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.rng-field input:focus,
.rng-field select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-muted);
}

/* Range sliders */
.rng-field input[type="range"] {
    width: 100%;
    accent-color: var(--color-accent);
    cursor: pointer;
}

.rng-toggles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem 1rem;
    margin-bottom: 1.2rem;
}
.rng-check {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text-dark);
    cursor: pointer;
    margin-bottom: 1.2rem;
}
.rng-toggles .rng-check { margin-bottom: 0; }
.rng-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent);
    cursor: pointer;
    flex-shrink: 0;
}

.rng-hint {
    display: block;
    margin-top: 0.45rem;
    font-size: 0.78rem;
    color: var(--color-text-mute2);
    line-height: 1.5;
}
.rng-error {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #b91c1c;
    font-size: 0.85rem;
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.rng-generate { width: 100%; justify-content: center; margin-top: 0.3rem; }

/* ── Result panel ────────────────────────────────────────────── */
.rng-result-empty {
    text-align: center;
    color: var(--color-text-mute2);
    padding: 3rem 1rem;
}
.rng-result-empty i {
    font-size: 3rem;
    color: var(--color-accent);
    opacity: 0.4;
    margin-bottom: 1rem;
    display: block;
}
.rng-result-empty p { font-size: 0.95rem; }

.rng-result-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.2rem;
}
.rng-result-head .rng-card-title { margin-bottom: 0; }
.rng-count-badge {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    background: var(--color-accent-muted);
    border-radius: var(--radius-pill);
    padding: 0.3rem 0.75rem;
    white-space: nowrap;
}

/* ── Strength meter ──────────────────────────────────────────── */
.rng-strength { margin-bottom: 1.2rem; }
.rng-strength-bar {
    height: 8px;
    background: var(--color-bg-light3);
    border-radius: var(--radius-pill);
    overflow: hidden;
}
.rng-strength-bar span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: var(--radius-pill);
    transition: width var(--transition), background var(--transition);
}
.rng-strength-label {
    display: inline-block;
    margin-top: 0.45rem;
    font-size: 0.78rem;
    font-weight: 600;
}
.rng-s-1 .rng-strength-bar span { width: 25%;  background: #ef4444; }
.rng-s-2 .rng-strength-bar span { width: 50%;  background: #f59e0b; }
.rng-s-3 .rng-strength-bar span { width: 75%;  background: #eab308; }
.rng-s-4 .rng-strength-bar span { width: 100%; background: var(--color-accent); }
.rng-s-1 .rng-strength-label { color: #ef4444; }
.rng-s-2 .rng-strength-label { color: #d97706; }
.rng-s-3 .rng-strength-label { color: #a16207; }
.rng-s-4 .rng-strength-label { color: var(--color-accent-dark); }

/* ── Result list ─────────────────────────────────────────────── */
.rng-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
    max-height: 360px;
    overflow-y: auto;
}
.rng-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--color-bg-light2);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.75rem;
    animation: rng-pop 0.22s ease;
}
.rng-item-text {
    flex: 1;
    min-width: 0;
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-dark);
    word-break: break-all;
    line-height: 1.45;
}
.rng-item-copy {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border-light);
    background: #fff;
    color: var(--color-text-body);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.rng-item-copy:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }
.rng-item-copy.copied { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }

/* Numbers-only compact display when single value */
.rng-list.numbers-single { align-items: center; }
.rng-list.numbers-single .rng-item {
    justify-content: center;
    padding: 1.5rem;
    background: var(--color-accent-tint);
    border-color: var(--color-accent-border);
}
.rng-list.numbers-single .rng-item-text {
    flex: 0;
    text-align: center;
    font-size: clamp(2.5rem, 9vw, 4rem);
    color: var(--color-accent-dark);
}
.rng-list.numbers-single .rng-item-copy { position: absolute; }

@keyframes rng-pop {
    from { transform: scale(0.97); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

.rng-actions {
    display: flex;
    gap: 0.7rem;
    flex-wrap: wrap;
}
.rng-actions .btn { flex: 1; justify-content: center; white-space: nowrap; }
.rng-copyall.copied { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }

/* ── Info section ────────────────────────────────────────────── */
.rng-how {
    background: #fff;
    border-top: 1px solid var(--color-border-card);
    padding: 3.5rem 0;
}
.rng-how h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin: 0 0 1.4rem;
}
.rng-how h2:not(:first-child) { margin-top: 2.8rem; }

.rng-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.1rem;
}
.rng-feature {
    border: 1px solid var(--color-border-card);
    border-radius: var(--radius-md);
    padding: 1.3rem;
    background: var(--color-bg-light2);
}
.rng-feature i {
    font-size: 1.4rem;
    color: var(--color-accent);
    margin-bottom: 0.7rem;
}
.rng-feature h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 0.4rem;
}
.rng-feature p {
    font-size: 0.86rem;
    line-height: 1.6;
    color: var(--color-text-body);
}

.rng-faq { max-width: 760px; }
.rng-faq details {
    border: 1px solid var(--color-border-card);
    border-radius: var(--radius-md);
    padding: 0.95rem 1.1rem;
    margin-bottom: 0.8rem;
    background: var(--color-bg-light2);
}
.rng-faq summary {
    font-weight: 600;
    color: var(--color-text-dark);
    cursor: pointer;
    list-style: none;
    position: relative;
    padding-right: 1.5rem;
}
.rng-faq summary::-webkit-details-marker { display: none; }
.rng-faq summary::after {
    content: "\002B";
    position: absolute;
    right: 0; top: 0;
    font-size: 1.2rem;
    color: var(--color-accent-dark);
}
.rng-faq details[open] summary::after { content: "\2212"; }
.rng-faq p {
    margin-top: 0.7rem;
    color: var(--color-text-body);
    line-height: 1.7;
    font-size: 0.92rem;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 860px) {
    .rng-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .rng-form, .rng-result { padding: 1.3rem; }
    .rng-toggles { grid-template-columns: 1fr; }
    .rng-actions { flex-direction: column; }
}