/* ============================================
   COMPONENTS — Buttons, inputs, settings, chips
   ============================================ */

/* ============================================
   GLOBAL SETTINGS BAR
   ============================================ */
.global-settings-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--nb-space-lg);
    flex-wrap: wrap;
    padding: var(--nb-space-sm) var(--nb-space-lg);
    background: var(--nb-bg-layer-2);
    border-bottom: 1px solid var(--nb-border-subtle);
}

.global-setting-group {
    display: flex;
    align-items: center;
    gap: var(--nb-space-sm);
}

.global-setting-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--nb-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

/* Speed toggle — segmented control */
.speed-toggle {
    display: flex;
    border-radius: var(--nb-radius-sm);
    overflow: hidden;
    border: 1px solid var(--nb-border-subtle);
}

.speed-btn {
    padding: 5px 14px;
    background: transparent;
    border: none;
    border-right: 1px solid var(--nb-border-subtle);
    color: var(--nb-text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: background var(--nb-transition-fast), color var(--nb-transition-fast);
    -webkit-tap-highlight-color: transparent;
    min-height: 32px;
}

.speed-btn:last-child {
    border-right: none;
}

.speed-btn.active {
    background: var(--nb-accent-primary);
    color: #ffffff;
    font-weight: 700;
}

.speed-btn:hover:not(.active) {
    background: var(--nb-accent-tint-soft);
    color: var(--nb-text-primary);
}

/* Confetti toggle */
.global-confetti-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.8125rem;
    color: var(--nb-text-secondary);
    user-select: none;
}

.global-confetti-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--nb-accent-primary);
    cursor: pointer;
}

.global-confetti-label:hover { color: var(--nb-text-primary); }

/* ============================================
   BUTTONS
   ============================================ */
.action-btn {
    min-height: var(--nb-touch-target);
    padding: var(--nb-space-sm) var(--nb-space-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--nb-radius-md);
    cursor: pointer;
    touch-action: manipulation;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--nb-space-sm);
    background: var(--nb-bg-layer-2);
    color: var(--nb-text-primary);
    transition: all var(--nb-transition-fast);
    font-family: inherit;
}

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

.action-btn svg { width: 20px; height: 20px; flex-shrink: 0; }

/* Primary gradient button */
.btn-primary {
    flex: 1;
    background: linear-gradient(135deg, var(--nb-gradient-start) 0%, var(--nb-gradient-end) 100%);
    color: var(--nb-text-on-accent);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    box-shadow: var(--nb-shadow-accent);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--nb-gradient-hover-start) 0%, var(--nb-gradient-hover-end) 100%);
    box-shadow: 0 6px 20px var(--nb-accent-glow);
    transform: translateY(-1px);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--nb-text-on-accent);
    outline-offset: 2px;
    background: linear-gradient(135deg, var(--nb-gradient-hover-start) 0%, var(--nb-gradient-hover-end) 100%);
}

.btn-primary:active {
    background: linear-gradient(135deg, var(--nb-gradient-active-start) 0%, var(--nb-gradient-active-end) 100%);
    box-shadow: var(--nb-shadow-1);
    transform: translateY(0);
}

/* Icon-only button */
.icon-btn {
    width: var(--nb-touch-target);
    height: var(--nb-touch-target);
    padding: var(--nb-space-sm);
    flex-shrink: 0;
}

.icon-btn:hover { background: var(--nb-overlay-soft); }
.icon-btn:focus-visible { outline: 2px solid var(--nb-accent-primary); outline-offset: 2px; }
.icon-btn:active { background: var(--nb-overlay-strong); transform: scale(0.95); }

/* Fullscreen button — top-right of panel header */
.fullscreen-btn {
    width: 36px;
    height: 36px;
    padding: var(--nb-space-xs);
    background: transparent;
    border: 1px solid var(--nb-muted-border-soft);
    border-radius: var(--nb-radius-md);
    color: var(--nb-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--nb-transition-fast);
    flex-shrink: 0;
}

.fullscreen-btn:hover {
    background: var(--nb-overlay-soft);
    border-color: var(--nb-accent-border-soft);
    color: var(--nb-text-primary);
}

.fullscreen-btn:focus-visible {
    outline: 2px solid var(--nb-accent-primary);
    outline-offset: 2px;
}

.fullscreen-btn svg { width: 18px; height: 18px; }

/* Copy button — labelled variant */
.copy-btn {
    padding: var(--nb-space-sm) var(--nb-space-md);
    font-size: 0.8125rem;
    background: var(--nb-bg-layer-2);
}

.copy-btn.copied,
.copy-btn.copied:hover {
    background: var(--nb-state-success);
    color: var(--nb-text-on-accent);
}

/* Danger / clear button */
.btn-danger {
    border: 1px solid var(--nb-error-border-soft);
    color: var(--nb-error-text-muted);
    background: transparent;
}
.btn-danger:hover {
    border-color: var(--nb-state-error);
    color: var(--nb-state-error);
    background: var(--nb-error-surface-soft);
}

/* ============================================
   SETTINGS GROUPS
   ============================================ */
.settings-group { margin-bottom: var(--nb-space-md); }
.settings-group:last-child { margin-bottom: 0; }

.settings-label {
    display: flex;
    align-items: center;
    gap: var(--nb-space-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--nb-text-muted);
    margin-bottom: var(--nb-space-sm);
}

.settings-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--nb-text-muted);
    opacity: 0.7;
    margin-top: var(--nb-space-xs);
    margin-bottom: var(--nb-space-sm);
}

/* ============================================
   INPUTS
   ============================================ */
.text-input {
    width: 100%;
    padding: var(--nb-space-sm) var(--nb-space-md);
    min-height: var(--nb-touch-target);
    background: var(--nb-bg-layer-2);
    border: 1px solid var(--nb-bg-layer-1);
    border-radius: var(--nb-radius-sm);
    color: var(--nb-text-primary);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: border-color var(--nb-transition-fast);
}

.text-input:focus { outline: none; border-color: var(--nb-accent-primary); }
.text-input:focus-visible { outline: 2px solid var(--nb-accent-primary); outline-offset: 1px; }
.text-input::placeholder { color: var(--nb-text-muted); }

.textarea-input {
    resize: vertical;
    min-height: 100px;
    padding: var(--nb-space-sm) var(--nb-space-md);
}

.number-input {
    width: 70px;
    padding: var(--nb-space-sm);
    background: var(--nb-bg-layer-2);
    border: 1px solid var(--nb-bg-layer-1);
    border-radius: var(--nb-radius-sm);
    color: var(--nb-text-primary);
    font-size: 1rem;
    text-align: center;
    font-family: inherit;
    -moz-appearance: textfield;
    appearance: textfield;
}
.number-input::-webkit-inner-spin-button,
.number-input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.number-input:focus { outline: none; border-color: var(--nb-accent-primary); }

/* Stepper control */
.stepper {
    display: inline-flex;
    align-items: center;
    border-radius: var(--nb-radius-md);
    overflow: hidden;
    border: 1px solid var(--nb-overlay-border);
    background: var(--nb-bg-layer-2);
    transition: border-color var(--nb-transition-fast);
}

.stepper:focus-within { border-color: var(--nb-accent-primary); }

.stepper .number-input {
    border: none;
    width: 50px;
    border-radius: 0;
    background: transparent;
}

.stepper-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    min-height: var(--nb-touch-target);
    background: transparent;
    border: none;
    color: var(--nb-text-muted);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    touch-action: manipulation;
    transition: background var(--nb-transition-fast), color var(--nb-transition-fast);
    padding: 0;
    font-family: inherit;
}

.stepper-btn:hover { background: var(--nb-overlay-soft); color: var(--nb-text-primary); }
.stepper-btn:active { background: var(--nb-overlay-strong); color: var(--nb-accent-primary); }
.stepper-btn[data-dir="-1"] { border-right: 1px solid var(--nb-overlay-soft); }
.stepper-btn[data-dir="1"]  { border-left: 1px solid var(--nb-overlay-soft); }

/* Inline range row */
.range-row {
    display: flex;
    align-items: center;
    gap: var(--nb-space-sm);
    flex-wrap: wrap;
}

.range-row span { font-size: 0.875rem; color: var(--nb-text-muted); }

/* Select */
.select-input {
    width: 100%;
    padding: var(--nb-space-sm) var(--nb-space-md);
    min-height: var(--nb-touch-target);
    background: var(--nb-bg-layer-2);
    border: 1px solid var(--nb-bg-layer-1);
    border-radius: var(--nb-radius-sm);
    color: var(--nb-text-primary);
    font-size: 0.9375rem;
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238892a6' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--nb-space-md) center;
    padding-right: calc(var(--nb-space-md) + 20px);
    transition: border-color var(--nb-transition-fast);
}

.select-input:focus { outline: none; border-color: var(--nb-accent-primary); }

/* ============================================
   TOGGLE CHIPS
   ============================================ */
.toggle-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--nb-space-sm);
}

.toggle-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--nb-space-sm) var(--nb-space-md);
    min-height: 40px;
    min-width: 48px;
    background: transparent;
    border: 1px solid var(--nb-muted-border-soft);
    border-radius: var(--nb-radius-md);
    color: var(--nb-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--nb-transition-fast);
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    font-family: inherit;
}

.toggle-chip:hover { background: var(--nb-overlay-subtle); border-color: var(--nb-muted-border-medium); color: var(--nb-text-primary); }
.toggle-chip:active { transform: scale(0.97); }
.toggle-chip.active { background: var(--nb-accent-tint-medium); border-color: var(--nb-accent-primary); color: var(--nb-text-primary); }

/* ============================================
   CHECKBOX / RADIO ITEMS
   ============================================ */
.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--nb-space-sm);
    padding: var(--nb-space-sm);
    background: var(--nb-interactive-surface);
    border: 1px solid transparent;
    border-radius: var(--nb-radius-sm);
    cursor: pointer;
    min-height: var(--nb-touch-target);
    transition: all var(--nb-transition-fast);
}

.checkbox-item:hover { background: var(--nb-interactive-surface-hover); border-color: var(--nb-muted-border-subtle); }
.checkbox-item:has(input:checked) { background: var(--nb-accent-tint-soft); border-color: var(--nb-accent-border-soft); }

.checkbox-item input[type="checkbox"],
.checkbox-item input[type="radio"] {
    width: 20px; height: 20px;
    accent-color: var(--nb-accent-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-item .item-content { display: flex; align-items: center; gap: var(--nb-space-sm); flex: 1; }
.checkbox-item span { font-size: 0.875rem; }

/* ============================================
   COLLAPSIBLE SECTIONS
   ============================================ */
.collapsible { margin-top: var(--nb-space-md); }

.collapsible-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: var(--nb-touch-target);
    padding: var(--nb-space-sm) 0;
    cursor: pointer;
    color: var(--nb-text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--nb-muted-border-subtle);
    border-bottom: none; border-left: none; border-right: none;
    background: transparent;
    font-family: inherit;
    text-align: left;
    width: 100%;
    transition: color var(--nb-transition-fast);
}

.collapsible-header:hover { color: var(--nb-text-primary); }
.collapsible-header svg { width: 20px; height: 20px; transition: transform var(--nb-transition-fast); }
.collapsible-header.open svg { transform: rotate(180deg); }
.collapsible-content { max-height: 0; overflow: hidden; transition: max-height var(--nb-transition-normal); }
.collapsible-content.open { max-height: 1200px; }
.collapsible-inner { padding: var(--nb-space-md) 0; }

/* ============================================
   ENTRY CHIPS (wheel entries, colour list etc.)
   ============================================ */
.entry-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--nb-space-xs);
    min-height: 40px;
    padding: var(--nb-space-xs);
    background: var(--nb-bg-layer-2);
    border-radius: var(--nb-radius-md);
    border: 1px solid var(--nb-bg-layer-1);
}

.entry-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px var(--nb-space-sm);
    background: var(--nb-bg-layer-1);
    border: 1px solid var(--nb-border-subtle);
    border-radius: 12px;
    font-size: 0.8125rem;
    color: var(--nb-text-secondary);
    max-width: 160px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.entry-chip-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: transparent;
    border: none;
    color: var(--nb-text-muted);
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    border-radius: 50%;
    transition: all var(--nb-transition-fast);
    font-size: 0.75rem;
    line-height: 1;
}

.entry-chip-remove:hover { background: var(--nb-error-surface-soft); color: var(--nb-state-error); }

/* ============================================
   TOAST
   ============================================ */
.toast {
    position: fixed;
    bottom: var(--nb-space-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: var(--nb-space-sm);
    background: var(--nb-bg-layer-2);
    border: 1px solid var(--nb-text-muted);
    color: var(--nb-text-primary);
    padding: var(--nb-space-sm) var(--nb-space-lg);
    border-radius: var(--nb-radius-md);
    font-size: 0.875rem;
    opacity: 0;
    transition: transform var(--nb-transition-normal), opacity var(--nb-transition-normal);
    z-index: 9000;
    pointer-events: none;
    white-space: nowrap;
}

.toast.visible { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.toast-success { background: var(--nb-surface-success); border-color: var(--nb-state-success); color: var(--nb-state-success); }
.toast.toast-warning { background: var(--nb-surface-warning); border-color: var(--nb-state-warning); color: var(--nb-state-warning); }
.toast.toast-error   { background: var(--nb-surface-error);   border-color: var(--nb-state-error);   color: var(--nb-state-error); }

/* ============================================
   UTILITY CLASSES
   ============================================ */
.u-hidden    { display: none !important; }
.icon-hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.u-mt-xs { margin-top: var(--nb-space-xs); }
.u-mt-sm { margin-top: var(--nb-space-sm); }
.u-mt-md { margin-top: var(--nb-space-md); }
.u-mb-sm { margin-bottom: var(--nb-space-sm); }
.u-mb-md { margin-bottom: var(--nb-space-md); }

/* Focus rings */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--nb-accent-primary);
    outline-offset: 2px;
}