/* Buttons */
.btn {
    background: var(--gradient-primary);
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-primary-heavy);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

/* Keyboard focus visibility for buttons */
.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn-small {
    background: var(--surface-secondary);
    border: 1px solid var(--border-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-small:hover {
    background: var(--hover-primary);
    border-color: var(--border-tertiary);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--surface-secondary);
    border: 1px solid var(--border-secondary);
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--hover-primary);
    border-color: var(--border-tertiary);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--gradient-danger);
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-danger);
}

/* Minimal button variants mapped to existing tokens */
.btn-primary { background: var(--gradient-primary); color: #fff; }
.btn-secondary { background: var(--surface-secondary); border: 1px solid var(--border-secondary); color: var(--text-secondary); }
.btn-ghost { background: transparent; border: 1px solid transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--hover-primary); color: var(--primary-color); }

/* Cards */
.card {
    background: var(--surface-primary);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-secondary);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-rainbow);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px var(--shadow-medium);
    border-color: var(--border-quaternary);
}

.card:hover::before {
    transform: translateX(0);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-title i {
    color: var(--primary-color);
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
}

.form-input {
    width: 100%;
    background: var(--surface-tertiary);
    border: 2px solid var(--border-primary);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--hover-secondary);
}

.form-help {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

/* Status and Tags */
.status-badge {
    background: var(--gradient-success);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.tag {
    background: var(--surface-secondary);
    border: 1px solid var(--border-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Toggle Components */
.ephemeral-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--surface-secondary);
    border: 1px solid var(--border-secondary);
}

.ephemeral-toggle:hover {
    background: var(--hover-primary);
    border-color: var(--border-tertiary);
}

.ephemeral-toggle[data-checked="true"] {
    background: var(--hover-secondary);
    border-color: var(--primary-color);
}

.ephemeral-toggle[data-checked="true"] .ephemeral-icon {
    color: var(--success-color);
}

.ephemeral-toggle[data-checked="false"] .ephemeral-icon {
    color: var(--danger-color);
}

.ephemeral-icon {
    font-weight: bold;
    font-size: 12px;
}

.ephemeral-text {
    font-size: 12px;
    color: var(--text-muted);
}


/* Switch (toggle) component */
.switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.switch input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    margin: 0;
}

/* Visual track and thumb */
.switch-visual {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    background: var(--surface-tertiary);
    border: 2px solid var(--border-primary);
    border-radius: 999px;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.switch--sm .switch-visual { width: 36px; height: 20px; }
.switch--lg .switch-visual { width: 52px; height: 28px; }

.switch-visual::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.25);
    transform: translate(0, -50%);
    transition: transform 0.2s ease;
}

/* Checked state moves the thumb to the right */
.switch input:checked + .switch-visual::after {
    transform: translate(18px, -50%);
}
.switch--sm input:checked + .switch-visual::after { transform: translate(14px, -50%); }
.switch--lg input:checked + .switch-visual::after { transform: translate(24px, -50%); }

/* iOS style: glossy background when on */
.switch--ios input:checked + .switch-visual {
    background: linear-gradient(180deg, rgba(255,255,255,0.25), rgba(255,255,255,0))
                , var(--hover-secondary);
    border-color: currentColor;
}

/* Flat style: no border, subtle track */
.switch--flat .switch-visual {
    border-width: 1px;
    border-color: var(--border-secondary);
    background: var(--surface-secondary);
}
.switch--flat input:checked + .switch-visual {
    background: currentColor;
    border-color: currentColor;
}
.switch--flat .switch-visual::after { box-shadow: none; }

/* Color modifiers use theme tokens */
.switch.is-primary { color: var(--primary-color); }
.switch.is-success { color: var(--secondary-color); }
.switch.is-warning { color: var(--warning-color); }
.switch.is-danger  { color: var(--danger-color); }

/* When on, tint the track with the currentColor */
.switch input:checked + .switch-visual {
    background: currentColor;
    border-color: currentColor;
}

/* Focus ring for keyboard nav */
.switch input:focus-visible + .switch-visual {
    box-shadow: 0 0 0 3px var(--hover-secondary);
}

/* Disabled state */
.switch[aria-disabled="true"], .switch input:disabled + .switch-visual {
    opacity: 0.6;
    cursor: not-allowed;
}

/* --- Demo toggles: chip/segmented/icon/header helpers --- */

/* Chip toggle: reuse ephemeral styles with a generic class */
.toggle-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--surface-secondary);
    border: 1px solid var(--border-secondary);
}
.toggle-chip:hover { background: var(--hover-primary); border-color: var(--border-tertiary); }
.toggle-chip[aria-checked="true"] { background: var(--hover-secondary); border-color: var(--primary-color); }
.toggle-chip[aria-checked="true"] .ephemeral-icon { color: var(--secondary-color); }
.toggle-chip[aria-checked="false"] .ephemeral-icon { color: var(--danger-color); }
.toggle-chip:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--hover-secondary); }

/* Segmented control */
.segmented { display: inline-flex; background: var(--surface-secondary); border: 1px solid var(--border-secondary); border-radius: 8px; overflow: hidden; }
.segmented-btn {
    appearance: none;
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 6px 12px;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}
.segmented-btn + .segmented-btn { border-left: 1px solid var(--border-secondary); }
.segmented-btn:hover { background: var(--hover-primary); }
.segmented-btn.is-active, .segmented-btn[aria-pressed="true"] { background: var(--hover-secondary); color: var(--primary-color); font-weight: 600; }
.segmented:focus-within { box-shadow: 0 0 0 3px var(--hover-secondary); }

/* Icon-only power toggle */
.icon-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px; height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
    background: var(--surface-secondary);
    color: var(--text-muted);
    transition: all 0.2s ease;
}
.icon-toggle:hover { background: var(--hover-primary); color: var(--primary-color); }
.icon-toggle.is-on { background: var(--hover-secondary); color: var(--secondary-color); border-color: var(--secondary-color); }
.icon-toggle:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--hover-secondary); }

/* Header toggle placement */
.header-toggle-area { display: flex; align-items: center; gap: 8px; }