/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-fast);
}
.btn:active {
    transform: scale(0.95);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-on-primary, #fff);
}
.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: #fff;
}
.btn-secondary:hover {
    background-color: var(--color-primary-dark);
}

/* Forms */
.form-input {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-strong);
    background: transparent;
    transition: border var(--transition-fast);
}
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

/* Cards */
.card {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-3);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

/* Glass panel */
.glass-panel {
    background-color: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

/* Skeleton loader */
.skeleton {
    background: linear-gradient(90deg, #e4e2e1 25%, #f6f3f2 50%, #e4e2e1 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite linear;
    border-radius: var(--radius-sm);
}
@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--text-caption);
    font-weight: bold;
}
.badge-error {
    background-color: var(--color-error-container);
    color: var(--color-error);
}
.badge-success {
    background-color: #f0fdf4;
    color: var(--color-success);
}

/* Toasts */
.toast {
    position: fixed;
    bottom: calc(var(--nav-bottom-height) + 16px);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--color-text-primary);
    color: var(--color-bg-page);
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.toast.toast--visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}
.toast--error {
    background-color: var(--color-error);
    color: #fff;
}