/* ============================================================
   Random String Generator — Tool Styles
   Prefix: .rsg-*  |  Theme: var(--primary-color) #6366F1 / #8B5CF6
   ============================================================ */

/* ── Section ─────────────────────────────────────────────── */
.rsg-section {
    padding: 60px 0 70px;
    background: #FFFFFF;
}

.rsg-section .container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ── Section Header ──────────────────────────────────────── */
.rsg-section-header {
    text-align: center;
    margin-bottom: 40px;
}

.rsg-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.rsg-badge i {
    font-size: 1.125rem;
}

.rsg-section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.65;
}

/* ── Output Card (top) ───────────────────────────────────── */
.rsg-output-card {
    background: #FFFFFF;
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    margin-bottom: 20px;
}

.rsg-output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 28px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.10);
    background: #F8FAFC;
}

.rsg-output-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.rsg-output-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.rsg-result-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.rsg-copy-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: 10px;
    border: 1.5px solid #E2E8F0;
    background: #FFFFFF;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.rsg-copy-all-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

/* ── Results Area ────────────────────────────────────────── */
.rsg-results-area {
    padding: 20px 24px;
    min-height: 220px;
    max-height: 380px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ── Empty State ─────────────────────────────────────────── */
.rsg-empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-align: center;
    padding: 32px 20px;
    pointer-events: none;
    min-height: 160px;
}

.rsg-empty-icon {
    font-size: 3rem;
    color: var(--primary-color);
    opacity: 0.2;
}

.rsg-empty-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    opacity: 0.45;
    margin: 0;
}

.rsg-empty-sub {
    font-size: 0.9rem;
    color: var(--text-secondary);
    opacity: 0.5;
    margin: 0;
}

/* ── Result Item ─────────────────────────────────────────── */
.rsg-result-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    transition: border-color 0.14s, background 0.14s;
}

.rsg-result-item:hover {
    border-color: rgba(99, 102, 241, 0.35);
    background: rgba(99, 102, 241, 0.04);
}

.rsg-result-index {
    font-size: 0.8rem;
    font-weight: 600;
    color: #94A3B8;
    min-width: 22px;
    text-align: right;
    flex-shrink: 0;
}

.rsg-result-text {
    flex: 1;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    word-break: break-all;
    line-height: 1.4;
    min-width: 0;
}

.rsg-item-copy-btn {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    border: 1.5px solid #E2E8F0;
    background: #FFFFFF;
    color: #94A3B8;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    flex-shrink: 0;
    transition: border-color 0.14s, color 0.14s, background 0.14s;
    padding: 0;
}

.rsg-item-copy-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.06);
}

.rsg-item-copy-btn.copied {
    border-color: #16A34A;
    color: #16A34A;
    background: rgba(22, 163, 74, 0.07);
}

/* ── Settings Card (bottom) ──────────────────────────────── */
.rsg-settings-card {
    background: #FFFFFF;
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    padding: 24px 28px 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ── Mode Tabs ───────────────────────────────────────────── */
.rsg-mode-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 1.5px solid #E2E8F0;
}

.rsg-mode-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border: none;
    background: transparent;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1.5px;
    transition: color 0.15s, border-color 0.15s;
}

.rsg-mode-tab i {
    font-size: 1rem;
}

.rsg-mode-tab:hover {
    color: var(--primary-color);
}

.rsg-mode-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* ── Settings Panels Row ─────────────────────────────────── */
.rsg-panels-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

/* ── Settings Group ──────────────────────────────────────── */
.rsg-ctrl-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px 18px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 14px;
}

.rsg-ctrl-label {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.rsg-ctrl-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.rsg-hint-tag {
    font-size: 0.75rem;
    font-weight: 500;
    color: #94A3B8;
    background: #E2E8F0;
    border-radius: 5px;
    padding: 2px 7px;
}

/* ── Checkboxes ──────────────────────────────────────────── */
.rsg-toggles-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.rsg-check-label {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
}

.rsg-check {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.rsg-check-box {
    width: 17px;
    height: 17px;
    border: 1.5px solid #C9D6E3;
    border-radius: 5px;
    background: #FFFFFF;
    flex-shrink: 0;
    position: relative;
    transition: all 0.15s;
}

.rsg-check:checked+.rsg-check-box {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.rsg-check:checked+.rsg-check-box::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 5px;
    height: 9px;
    border: 2px solid #FFFFFF;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}

.rsg-char-preview {
    font-size: 0.78rem;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    color: #94A3B8;
    background: #E2E8F0;
    border-radius: 4px;
    padding: 1px 6px;
}

/* ── Text Input ──────────────────────────────────────────── */
.rsg-input {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid #E2E8F0;
    border-radius: 10px;
    background: #FFFFFF;
    font-size: 0.9rem;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
}

.rsg-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.rsg-input::placeholder {
    color: #94A3B8;
    font-family: inherit;
    font-size: 0.85rem;
}

/* ── Option Button Group ─────────────────────────────────── */
.rsg-opt-group {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.rsg-opt-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border: 1.5px solid #E2E8F0;
    background: #FFFFFF;
    color: var(--text-secondary);
    transition: all 0.14s;
}

.rsg-opt-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.rsg-opt-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #FFFFFF;
}

/* ── Range + Number Inputs ───────────────────────────────── */
.rsg-length-inputs {
    display: flex;
    align-items: center;
    gap: 6px;
}

.rsg-num-input {
    width: 58px;
    padding: 5px 6px;
    border: 1.5px solid #E2E8F0;
    border-radius: 8px;
    background: #FFFFFF;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    outline: none;
    transition: border-color 0.15s;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
}

.rsg-num-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.rsg-unit {
    font-size: 0.82rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ── Range Slider ────────────────────────────────────────── */
.rsg-range {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    border-radius: 2px;
    background: #C9D6E3;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.rsg-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid #FFFFFF;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.25);
}

.rsg-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid #FFFFFF;
    cursor: pointer;
}

/* ── Bottom Controls Row ─────────────────────────────────── */
.rsg-bottom-controls {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    flex-wrap: wrap;
}

.rsg-count-group {
    flex: 1;
    min-width: 180px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px 18px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 14px;
}

/* ── Generate Button ─────────────────────────────────────── */
.rsg-btn-generate {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 32px;
    background: var(--primary-gradient);
    color: #FFFFFF;
    border: none;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.16s, transform 0.1s;
    white-space: nowrap;
    height: fit-content;
}

.rsg-btn-generate i {
    font-size: 1.125rem;
}

.rsg-btn-generate:hover {
    opacity: 0.88;
}

.rsg-btn-generate:active {
    transform: scale(0.98);
}

/* ── Toast ───────────────────────────────────────────────── */
.rsg-toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(16px);
    background: #1E293B;
    color: #FFFFFF;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 10px 22px;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease;
    z-index: 200;
    white-space: nowrap;
}

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

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 720px) {
    .rsg-panels-row {
        grid-template-columns: 1fr;
    }

    .rsg-bottom-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .rsg-btn-generate {
        width: 100%;
    }

    .rsg-output-header {
        padding: 14px 18px;
    }

    .rsg-results-area {
        padding: 14px 16px;
    }

    .rsg-settings-card {
        padding: 18px 16px 20px;
    }
}

/* ── focus-visible ───────────────────────────────────────── */
.rsg-mode-tab:focus-visible,
.rsg-btn-generate:focus-visible,
.rsg-copy-all-btn:focus-visible,
.rsg-opt-btn:focus-visible,
.rsg-item-copy-btn:focus-visible {
    outline: 3px solid rgba(99, 102, 241, 0.4);
    outline-offset: 2px;
}

.rsg-check:focus-visible+.rsg-check-box {
    outline: 3px solid rgba(99, 102, 241, 0.4);
    outline-offset: 2px;
}

.rsg-input:focus-visible,
.rsg-num-input:focus-visible {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}