/* ============================================================
   COMPONENTS.CSS — Reusable UI Components
   ============================================================ */

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    white-space: nowrap;
    cursor: pointer;
    line-height: 1;
    letter-spacing: -0.01em;
    position: relative;
    /* Default size (medium) — overridden by .btn--sm/lg/xl */
    height: 40px;
    padding-inline: var(--space-4);
    font-size: var(--text-body);
}

#main-content {
    /* margin-top: 30px; */
}

.app-main#main-content {
    margin-top: 0;
}

.pricing-card--recommended {
    overflow: hidden;
}

.pricing-card--recommended .pricing-card__badge {
    top: 10px;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.btn:hover {
    text-decoration: none;
}

/* Sizes */
.btn--sm {
    height: 32px;
    padding-inline: var(--space-3);
    font-size: var(--text-small);
}

.btn--md {
    height: 40px;
    padding-inline: var(--space-4);
    font-size: var(--text-body);
}

.btn--lg {
    height: 48px;
    padding-inline: var(--space-6);
    font-size: var(--text-body);
    font-weight: 500;
}

.btn--xl {
    height: 56px;
    padding-inline: var(--space-8);
    font-size: var(--text-body-lg);
    font-weight: 600;
    border-radius: var(--radius-lg);
}

.btn--full {
    width: 100%;
}

/* Variants */
.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-deep));
    color: var(--color-text-inverse);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3), 0 0 20px var(--glow-primary);
    border: 1px solid rgba(167, 139, 250, 0.2);
}

.btn--primary:hover {
    background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary));
    color: var(--color-text-inverse);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4), 0 0 32px var(--glow-primary-strong);
    transform: translateY(-1px);
    border-color: rgba(167, 139, 250, 0.35);
}

.btn--primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3), 0 0 16px var(--glow-primary);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-border-strong);
    backdrop-filter: blur(8px);
}

.btn--secondary:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    box-shadow: 0 0 16px var(--glow-primary);
}

.btn--ghost {
    background-color: transparent;
    color: var(--color-text-secondary);
}

.btn--ghost:hover {
    background-color: var(--color-bg-subtle);
    color: var(--color-text);
}

.btn--danger {
    background-color: transparent;
    color: var(--color-error);
    border: 1.5px solid var(--color-error);
}

.btn--danger:hover {
    background-color: var(--color-error-bg);
}

/* States */
.btn:disabled,
.btn--disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn--loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn--loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: var(--radius-full);
    animation: btn-spin 0.6s linear infinite;
    inset: 0;
    margin: auto;
    color: var(--color-text-inverse);
}

.btn--secondary.btn--loading::after,
.btn--ghost.btn--loading::after {
    color: var(--color-primary);
}

@keyframes btn-spin {
    to { transform: rotate(360deg); }
}


/* --- Form Elements --- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group + .form-group {
    margin-top: var(--space-4);
}

.form-label {
    font-size: var(--text-small);
    font-weight: 600;
    color: var(--color-text);
}

.form-label--required::after {
    content: ' *';
    color: var(--color-error);
}

.form-required {
    color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
    height: 44px;
    padding: var(--space-3);
    background-color: var(--color-bg-subtle);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
    width: 100%;
}

.form-textarea {
    height: auto;
    min-height: 100px;
    resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus), 0 0 20px var(--glow-primary);
    background-color: var(--color-bg);
}

.form-input--error,
.form-textarea--error {
    border-color: var(--color-error);
}

.form-input--error:focus,
.form-textarea--error:focus {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.form-hint {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--color-error);
}

.form-actions {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

/* Checkbox */
.form-check,
.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.form-check__label {
    font-size: var(--text-body);
    color: var(--color-text);
    line-height: var(--leading-normal);
}


/* --- Cards --- */
.card {
    background-color: var(--color-bg-elevated, var(--color-bg));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal);
    position: relative;
}

.card--elevated {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-md);
}

.card--highlighted {
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.06), rgba(45, 27, 105, 0.12));
    border-color: rgba(167, 139, 250, 0.25);
    box-shadow: var(--shadow-md), 0 0 30px var(--glow-primary);
}

.card--glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

.card--subtle {
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    box-shadow: none;
}

/* Celestial card — premium glow border effect */
.card--celestial {
    background: linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg-subtle) 100%);
    border: 1px solid var(--color-border-glow);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(167, 139, 250, 0.06);
}

.card--celestial:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-lg), 0 0 30px var(--glow-primary);
    transform: translateY(-2px);
}

.card__title {
    font-size: var(--text-h3);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.card__text {
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}


/* --- Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    letter-spacing: var(--tracking-wide);
    line-height: 1;
}

.badge--primary {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.badge--default {
    background-color: var(--color-bg-muted);
    color: var(--color-text-secondary);
}

.badge--ai {
    background-color: var(--color-ai-badge-bg);
    color: var(--color-ai-badge-text);
}

.badge--ai .badge__icon {
    color: var(--color-ai-badge-icon);
}

.badge--accent {
    background: linear-gradient(135deg, var(--color-accent-light), rgba(212, 175, 55, 0.18));
    color: var(--color-accent);
    border: 1px solid rgba(212, 175, 55, 0.2);
    box-shadow: 0 0 8px var(--glow-accent);
}

.badge--success {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.badge--warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
}


/* --- Flash Messages / Toast --- */
.flash {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-small);
    margin-bottom: var(--space-4);
}

.flash--success {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.flash--error {
    background-color: var(--color-error-bg);
    color: var(--color-error);
}

.flash--warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
}

.flash--info {
    background-color: var(--color-info-bg);
    color: var(--color-info);
}

.flash__close {
    margin-left: auto;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
    background: none;
    border: none;
    color: inherit;
    font-size: var(--text-body);
    line-height: 1;
}

.flash__close:hover {
    opacity: 1;
}


/* --- FAQ Accordion --- */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg-subtle);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.faq-item[open] {
    border-color: var(--color-border-strong);
    box-shadow: 0 0 12px var(--glow-primary-subtle);
}

.faq-item__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-body);
    font-weight: 500;
    color: var(--color-text);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.faq-item__question:hover {
    background-color: var(--color-bg-muted);
    color: var(--color-primary-hover);
}

.faq-item__icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    transition: transform var(--transition-normal);
}

.faq-item[open] .faq-item__icon {
    transform: rotate(180deg);
}

.faq-item__answer {
    padding: 0 var(--space-4) var(--space-4);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}


/* --- AI Disclosure Badge --- */
.ai-disclosure {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-ai-badge-text);
    background-color: var(--color-ai-badge-bg);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    line-height: 1;
}

.ai-disclosure__icon {
    font-style: normal;
}


/* --- Trust Bar --- */
.trust-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-8);
    padding: var(--space-6);
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.04), rgba(45, 27, 105, 0.06));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.trust-bar__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-small);
    color: var(--color-text-secondary);
}

.trust-bar__item svg {
    color: var(--color-primary);
    opacity: 0.7;
    filter: drop-shadow(0 0 4px var(--glow-primary));
}


/* --- Empty State --- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-16) var(--space-4);
}

.empty-state__icon {
    width: 48px;
    height: 48px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.empty-state__title {
    font-size: var(--text-h3);
    margin-bottom: var(--space-2);
}

.empty-state__text {
    color: var(--color-text-secondary);
    max-width: 360px;
    margin-bottom: var(--space-6);
}


/* --- Divider --- */
.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin-block: var(--space-6);
}