/* ================================================================
   RANDOM-NUMBER-GENERATOR.CSS  —  Premium Random Number Generator
   ================================================================ */

/* ══════════════════════════════════════════════════════════════════
   INPUT CARD OVERRIDES / EXTENSIONS
══════════════════════════════════════════════════════════════════ */
.rng-card {
    max-width: 560px;
}

.rng-range-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    margin-bottom: 1.4rem;
}

.rng-input-group { margin-bottom: 0; }

.rng-input-label {
    display: block;
    font-size: .88rem;
    font-weight: 600;
    color: var(--text-soft);
    margin-bottom: .5rem;
}

.rng-number-input {
    width: 100%;
    padding: .82rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    box-sizing: border-box;
}

.rng-number-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3.5px rgba(79, 70, 229, .13);
}

.rng-number-input[aria-invalid="true"] {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, .1);
}

.rng-input-error {
    display: none;
    font-size: .82rem;
    color: #ef4444;
    margin-top: .38rem;
    font-weight: 500;
}
.rng-input-error.visible { display: block; }

/* ── Divider ─────────────────────────────────────────────────── */
.rng-divider {
    height: 1px;
    background: var(--border);
    margin: 1.4rem 0;
    opacity: .6;
}

/* ── Advanced Options ────────────────────────────────────────── */
.rng-advanced-title {
    font-size: .82rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.rng-advanced-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    align-items: start;
    margin-bottom: 1.2rem;
}

.rng-checkbox-group {
    display: flex;
    flex-direction: column;
    gap: .55rem;
}

.rng-checkbox-label {
    display: flex;
    align-items: center;
    gap: .55rem;
    font-size: .9rem;
    color: var(--text);
    cursor: pointer;
    user-select: none;
}

.rng-checkbox-label input[type="checkbox"] {
    width: 17px;
    height: 17px;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

/* ── Quick Presets ───────────────────────────────────────────── */
.rng-presets {
    display: flex;
    align-items: center;
    gap: .6rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.rng-presets-label {
    font-size: .82rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-right: .1rem;
}

.rng-preset-btn {
    padding: .32rem .82rem;
    font-size: .83rem;
    font-weight: 600;
    border: 1.5px solid var(--border);
    border-radius: 50px;
    background: transparent;
    color: var(--text-soft);
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.5;
}

.rng-preset-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* ── Action Buttons ──────────────────────────────────────────── */
.rng-btn-row {
    display: flex;
    gap: .8rem;
}

.btn-rng-generate {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .92rem 1.6rem;
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 14px rgba(79, 70, 229, .35);
    line-height: 1;
}

.btn-rng-generate:hover:not(:disabled) {
    opacity: .92;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, .45);
}

.btn-rng-generate:active:not(:disabled) {
    transform: translateY(0);
}

.btn-rng-generate:disabled {
    opacity: .45;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-rng-reset {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .92rem 1.3rem;
    font-size: .92rem;
    font-weight: 600;
    color: var(--text-soft);
    background: transparent;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1;
}

.btn-rng-reset:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* ══════════════════════════════════════════════════════════════════
   RESULT CARD
══════════════════════════════════════════════════════════════════ */
.rng-result-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: 2.2rem 2rem;
    max-width: 560px;
    margin: 1.6rem auto 0;
    animation: rngFadeIn .35s ease;
}

@keyframes rngFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.rng-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.4rem;
    flex-wrap: wrap;
    gap: .6rem;
}

.rng-result-title {
    font-size: .88rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: .06em;
    text-transform: uppercase;
}

.rng-result-meta {
    font-size: .8rem;
    color: var(--text-muted);
}

/* ── Single number ───────────────────────────────────────────── */
.rng-single-display {
    text-align: center;
    padding: 1.4rem 0 1.2rem;
}

.rng-single-number {
    font-size: clamp(3.5rem, 12vw, 6rem);
    font-weight: 900;
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    letter-spacing: -2px;
    animation: rngPop .3s cubic-bezier(.34, 1.56, .64, 1);
}

@keyframes rngPop {
    from { transform: scale(.6); opacity: 0; }
    to   { transform: scale(1);  opacity: 1; }
}

/* ── Multiple numbers grid ───────────────────────────────────── */
.rng-numbers-grid {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    justify-content: center;
    padding: .6rem 0 .4rem;
}

.rng-number-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 52px;
    padding: .52rem .9rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    border: 1.5px solid rgba(79, 70, 229, .2);
    border-radius: 50px;
    animation: rngPop .3s cubic-bezier(.34, 1.56, .64, 1) both;
}

/* stagger children */
.rng-number-pill:nth-child(1)  { animation-delay: .02s; }
.rng-number-pill:nth-child(2)  { animation-delay: .05s; }
.rng-number-pill:nth-child(3)  { animation-delay: .08s; }
.rng-number-pill:nth-child(4)  { animation-delay: .11s; }
.rng-number-pill:nth-child(5)  { animation-delay: .14s; }
.rng-number-pill:nth-child(6)  { animation-delay: .17s; }
.rng-number-pill:nth-child(7)  { animation-delay: .20s; }
.rng-number-pill:nth-child(8)  { animation-delay: .23s; }
.rng-number-pill:nth-child(9)  { animation-delay: .26s; }
.rng-number-pill:nth-child(10) { animation-delay: .29s; }

/* ── Result Actions ──────────────────────────────────────────── */
.rng-result-actions {
    display: flex;
    gap: .7rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--border);
}

.btn-rng-action {
    display: inline-flex;
    align-items: center;
    gap: .42rem;
    padding: .58rem 1.1rem;
    font-size: .88rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1;
    border: 1.5px solid var(--border);
    background: transparent;
    color: var(--text-soft);
}

.btn-rng-action:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-1px);
}

.btn-rng-action.primary {
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 3px 10px rgba(79, 70, 229, .3);
}

.btn-rng-action.primary:hover {
    opacity: .9;
    color: #fff;
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    box-shadow: 0 5px 16px rgba(79, 70, 229, .4);
}

/* ── Sort toggle ─────────────────────────────────────────────── */
.rng-sort-row {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: .5rem;
    margin-bottom: .5rem;
}

.rng-sort-label {
    font-size: .8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ══════════════════════════════════════════════════════════════════
   TOAST / SNACKBAR
══════════════════════════════════════════════════════════════════ */
.rng-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #1e1b4b;
    color: #fff;
    font-size: .9rem;
    font-weight: 600;
    padding: .75rem 1.5rem;
    border-radius: 50px;
    box-shadow: 0 8px 24px rgba(0,0,0,.25);
    opacity: 0;
    transition: opacity .25s ease, transform .25s ease;
    pointer-events: none;
    z-index: 9999;
    white-space: nowrap;
}

.rng-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ══════════════════════════════════════════════════════════════════
   SEO SECTION
══════════════════════════════════════════════════════════════════ */
.tool-seo-section {
    max-width: 720px;
    margin: 3.5rem auto 0;
    padding: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.tool-seo-section h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: .7rem;
    margin-top: 1.4rem;
}

.tool-seo-section h2:first-child { margin-top: 0; }

.tool-seo-section p,
.tool-seo-section ul {
    font-size: .96rem;
    color: var(--text-soft);
    line-height: 1.75;
    margin-bottom: .6rem;
}

.tool-seo-section ul {
    padding-left: 1.3rem;
}

.tool-seo-section li { margin-bottom: .35rem; }

/* ══════════════════════════════════════════════════════════════════
   ALSO LIKE / INTERNAL LINKS
══════════════════════════════════════════════════════════════════ */
.also-like-section {
    max-width: 560px;
    margin: 2.5rem auto 0;
    text-align: center;
}

.also-like-section h3 {
    font-size: .88rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.also-like-grid {
    display: flex;
    gap: .8rem;
    justify-content: center;
    flex-wrap: wrap;
}

.also-like-card {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .6rem 1.2rem;
    font-size: .9rem;
    font-weight: 600;
    color: var(--text-soft);
    background: var(--card-bg);
    border: 1.5px solid var(--border);
    border-radius: 50px;
    text-decoration: none;
    transition: all var(--transition);
}

.also-like-card:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, .15);
}

.also-like-card-icon { font-size: 1rem; }

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════════ */
@media (max-width: 520px) {
    .rng-range-grid,
    .rng-advanced-grid {
        grid-template-columns: 1fr;
    }

    .rng-btn-row {
        flex-direction: column;
    }

    .rng-result-actions {
        justify-content: center;
    }

    .rng-single-number {
        font-size: 4rem;
    }

    .tool-seo-section {
        padding: 1.4rem 1.2rem;
    }
}