/* Reusable component helpers */

/* Base button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;

    padding: 10px 20px;
    border-radius: 999px;
    border: 1px solid transparent;

    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #ffffff;

    cursor: pointer;
    font-size: 0.9em;
    font-weight: 600;
    letter-spacing: 0.02em;

    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top left,
        rgba(255, 255, 255, 0.35),
        transparent 55%);
    opacity: 0;
    transition: opacity 0.25s ease-out;
    pointer-events: none;
}

.btn:hover::after {
    opacity: 1;
}

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

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

.btn:focus-visible {
    outline: 2px solid rgba(59, 130, 246, 0.9);
    outline-offset: 3px;
}

/* Variants */
.btn--ghost {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border);
    box-shadow: none;
}

.btn--ghost:hover {
    background: rgba(59, 130, 246, 0.06);
    box-shadow: var(--shadow);
}

.btn--outline {
    background: transparent;
    color: var(--accent-primary);
    border-color: rgba(108, 228, 93, 0.699);
    box-shadow: none;
}

.btn--outline:hover {
    background: rgba(59, 130, 246, 0.06);
}

/* Disabled state */
.btn:disabled,
.btn[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
    transform: none;
}

/* Icon-only or icon-leading buttons */
.btn--icon {
    padding-inline: 12px;
    border-radius: 999px;
}

/* If you want, you can start using .btn in HTML
   in addition to control-btn/chart-btn */

/* Control buttons in the toolbar */
.control-btn {
    /* inherit button feel but keep your layout semantics */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;

    padding: 10px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;

    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;
    color: var(--text-primary);

    transition: var(--transition);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.control-btn:hover {
    background: var(--accent-primary);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.control-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 1px rgba(15, 23, 42, 0.1);
}

.control-btn.active {
    background: var(--accent-primary);
    color: #ffffff;
    border-color: var(--accent-primary);
}

.control-btn:focus-visible {
    outline: 2px solid rgba(59, 130, 246, 0.9);
    outline-offset: 3px;
}

/* Chart action buttons */
.chart-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;

    padding: 8px 16px;
    border-radius: 6px;
    border: none;

    background: var(--accent-primary);
    color: #ffffff;

    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;

    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.15);
}

.chart-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.chart-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.18);
}

.chart-btn:focus-visible {
    outline: 2px solid rgba(59, 130, 246, 0.9);
    outline-offset: 3px;
}

.chart-btn.secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    box-shadow: none;
}

.chart-btn.secondary:hover {
    background: var(--border);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Generic card style (can be reused later) */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 20px;
    transition: var(--transition);
    position: relative;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(59, 130, 246, 0.25);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.card-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}