/* =============================================================================
   REMOTIR WWW - COMPONENTS
   =============================================================================
   Reusable UI components: buttons, cards, navigation, footer, forms.
   ============================================================================= */

/* =============================================================================
   BUTTONS
   ============================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 10px var(--space-4);
    font-size: var(--text-md);
    font-weight: var(--font-semibold);
    line-height: 24px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-brand-accent);
    outline-offset: 2px;
}

/* Primary Button (White) */
.btn--primary {
    background-color: var(--color-btn-primary-bg);
    color: var(--color-btn-primary-text);
    border-color: var(--color-btn-primary-border);
    box-shadow: var(--shadow-btn);
}

.btn--primary:hover {
    background-color: #f9fafb;
    border-color: #9ca3af;
}

.btn--primary:active {
    background-color: #f3f4f6;
}

/* Blue Button */
.btn--blue {
    background-color: #2970ff;
    color: #ffffff;
    border-color: #2970ff;
}

.btn--blue:hover {
    background-color: #1d5ed9;
    border-color: #1d5ed9;
}

.btn--blue:active {
    background-color: #1a53c2;
    border-color: #1a53c2;
}

/* Ghost Button (Transparent) */
.btn--ghost {
    background-color: var(--color-btn-ghost-bg);
    color: var(--color-btn-ghost-text);
    border-color: transparent;
}

.btn--ghost:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.btn--ghost:active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Hero Primary Button (White with dark text) */
.btn--hero-primary {
    background-color: white;
    color: #414651;
    border: 1px solid #d5d7da;
    padding: 12px 24px;
    font-size: 18px;
    font-weight: 600;
    line-height: 28px;
    border-radius: 8px;
}

.btn--hero-primary:hover {
    background-color: #f9fafb;
    border-color: #9ca3af;
}

/* Button Sizes */
.btn--sm {
    padding: 8px var(--space-3);
    font-size: var(--text-sm);
}

.btn--lg {
    padding: 12px var(--space-6);
    font-size: var(--text-lg);
}

/* =============================================================================
   NAVIGATION
   ============================================================================= */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    padding: 0 var(--container-padding);
    max-width: var(--container-max);
    margin: 0 auto;
}

/* Logo */
.nav__logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.nav__logo svg {
    height: 33px;
    width: auto;
}

/* Nav Links */
.nav__links {
    display: flex;
    align-items: center;
    gap: 38px;
}

.nav__link {
    font-size: var(--text-md);
    font-weight: var(--font-semibold);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    line-height: 24px;
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-text-primary);
}

/* Nav Dropdown */
.nav__dropdown {
    position: relative;
}

.nav__dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--text-md);
    font-weight: var(--font-semibold);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    line-height: 24px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.nav__dropdown-trigger:hover,
.nav__dropdown.is-open .nav__dropdown-trigger {
    color: var(--color-text-primary);
}

.nav__dropdown-trigger svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.nav__dropdown.is-open .nav__dropdown-trigger svg {
    transform: rotate(180deg);
}

.nav__dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 248px;
    background: white;
    border: 1px solid #e9eaeb;
    border-radius: var(--radius-md);
    box-shadow: 0 12px 16px -4px rgba(10, 13, 18, 0.08),
                0 4px 6px -2px rgba(10, 13, 18, 0.03),
                0 2px 2px -1px rgba(10, 13, 18, 0.04);
    padding: 4px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-8px);
    transition: opacity var(--transition-fast), 
                transform var(--transition-fast), 
                visibility var(--transition-fast);
    z-index: var(--z-dropdown);
}

.nav__dropdown.is-open .nav__dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav__dropdown-item {
    display: block;
    padding: 8px 16px;
    margin: 1px 6px;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: #414651;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav__dropdown-item:hover {
    background-color: #fafafa;
    color: #252b37;
}

.nav__dropdown-item--active {
    background-color: #f0f5ff;
    color: #2970FF;
}

/* Parent dropdown trigger active when child is active */
.nav__dropdown-trigger--active {
    color: var(--color-text-primary);
}

/* =============================================================================
   MEGA DROPDOWN (Insights Navigation)
   ============================================================================= */
.nav__mega-dropdown {
    position: relative;
}

.nav__mega-dropdown .nav__dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--text-md);
    font-weight: var(--font-semibold);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    line-height: 24px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.nav__mega-dropdown .nav__dropdown-trigger:hover,
.nav__mega-dropdown.is-open .nav__dropdown-trigger {
    color: var(--color-text-primary);
}

.nav__mega-dropdown .nav__dropdown-trigger svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.nav__mega-dropdown.is-open .nav__dropdown-trigger svg {
    transform: rotate(180deg);
}

/* Mega Dropdown Panel */
.nav__mega-dropdown-panel {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%);
    width: 720px;
    display: grid;
    grid-template-columns: 220px 1fr;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.25);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-8px);
    transition: opacity var(--transition-fast), 
                transform var(--transition-fast), 
                visibility var(--transition-fast);
    z-index: var(--z-dropdown);
    overflow: hidden;
}

.nav__mega-dropdown.is-open .nav__mega-dropdown-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Left Panel - Categories */
.mega-dropdown__categories {
    background: var(--color-bg-light-subtle);
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: 2px;
    border-right: 1px solid var(--color-border-light);
}

.mega-dropdown__category {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-dark-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    cursor: pointer;
}

.mega-dropdown__category:hover,
.mega-dropdown__category.is-active {
    background: var(--color-bg-light);
    color: var(--color-text-dark);
}

.mega-dropdown__category.is-active {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.mega-dropdown__category-arrow {
    width: 16px;
    height: 16px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    color: var(--color-text-dark-secondary);
}

.mega-dropdown__category.is-active .mega-dropdown__category-arrow {
    opacity: 1;
}

.mega-dropdown__category--disabled {
    opacity: 0.5;
    cursor: default;
    pointer-events: none;
}

.mega-dropdown__divider {
    height: 1px;
    background: var(--color-border-light);
    margin: var(--space-2) var(--space-3);
}

.mega-dropdown__badge {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-text-dark-secondary);
    background: var(--color-bg-light);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin-left: var(--space-2);
}

/* Right Panel - Chapters */
.mega-dropdown__chapters {
    padding: var(--space-4) var(--space-5);
    display: none;
    flex-direction: column;
    gap: var(--space-2);
    min-height: 380px;
    max-height: 420px;
    overflow-y: auto;
}

.mega-dropdown__chapters.is-visible {
    display: flex;
}

.mega-dropdown__chapters-header {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--color-text-dark-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
}

.mega-dropdown__chapters-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px var(--space-4);
}

.mega-dropdown__chapter-link {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-dark-muted);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mega-dropdown__chapter-link:hover {
    background: var(--color-bg-light-subtle);
    color: var(--color-text-dark);
}

.mega-dropdown__chapter-number {
    color: var(--color-text-dark-secondary);
    margin-right: var(--space-1);
    font-variant-numeric: tabular-nums;
}

.mega-dropdown__view-all {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-3);
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-brand-blue);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.mega-dropdown__view-all:hover {
    background: var(--color-bg-accent-blue-soft);
}

/* Mega Dropdown Responsive */
@media (max-width: 1024px) {
    .nav__mega-dropdown-panel {
        width: 600px;
        grid-template-columns: 180px 1fr;
    }
}

@media (max-width: 1024px) {
    .nav__mega-dropdown {
        display: none;
    }
}

/* Nav Actions */
.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Mobile Menu Button */
.nav__mobile-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--space-2);
    cursor: pointer;
    color: var(--color-text-primary);
}

.nav__mobile-toggle svg {
    width: 24px;
    height: 24px;
}

/* Mobile Navigation */
.nav__mobile {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-primary);
    padding: var(--space-6);
    flex-direction: column;
    gap: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.nav__mobile.is-open {
    display: flex;
}

.nav__mobile .nav__link {
    font-size: var(--text-lg);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
}

.nav__mobile-group {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.nav__mobile-header {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-4) 0 var(--space-2) 0;
}

.nav__mobile-group .nav__link {
    padding-left: var(--space-4);
    font-size: var(--text-md);
}

.nav__mobile .nav__link--active {
    color: var(--color-text-primary);
}

.nav__mobile .btn {
    margin-top: var(--space-4);
    width: 100%;
}

/* Responsive Navigation */
@media (max-width: 1024px) {
    .nav__links,
    .nav__actions {
        display: none;
    }
    
    .nav__mobile-toggle {
        display: block;
    }
}

/* =============================================================================
   FOOTER
   ============================================================================= */
.footer {
    background-color: var(--color-bg-primary);
    padding: var(--section-padding) 0 var(--space-8);
}

/* Top Divider */
.footer__divider {
    height: 1px;
    background-color: var(--color-border);
    margin-bottom: var(--space-12);
}

/* Footer Link Columns - 4 column grid */
.footer__columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-16);
}

.footer__column {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.footer__column-title {
    font-size: var(--text-md);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    line-height: 1.3;
}

.footer__column-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer__link {
    font-size: var(--text-sm);
    font-weight: var(--font-regular);
    color: var(--color-text-secondary);
    line-height: 1.5;
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-text-primary);
}

/* Footer Bottom Bar */
.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
    position: relative;
}

.footer__logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.footer__logo img {
    height: 28px;
    width: auto;
}

/* Copyright - Centered */
.footer__copyright {
    font-size: var(--text-sm);
    font-weight: var(--font-regular);
    color: var(--color-text-muted);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

/* Social Links - Right aligned */
.footer__social-links {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.footer__social {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer__social:hover {
    color: var(--color-text-primary);
}

.footer__social svg {
    width: 20px;
    height: 20px;
}

/* Footer Responsive */
@media (max-width: 968px) {
    .footer__columns {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8) var(--space-6);
    }
    
    .footer__copyright {
        position: static;
        transform: none;
    }
    
    .footer__bottom {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-4);
    }
}

@media (max-width: 640px) {
    .footer__columns {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }
    
    .footer__column {
        align-items: center;
    }
    
    .footer__bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--space-6);
    }
    
    .footer__logo {
        order: 1;
    }
    
    .footer__copyright {
        order: 2;
    }
    
    .footer__social-links {
        order: 3;
    }
}

/* =============================================================================
   SECTION HEADERS
   ============================================================================= */
.section-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.section-header__title {
    font-size: var(--text-6xl);
    font-weight: var(--font-semibold);
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-primary);
}

.section-header__subtitle {
    font-size: var(--text-2xl);
    font-weight: var(--font-regular);
    line-height: 1.3;
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .section-header {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        text-align: center;
    }
    
    .section-header__title {
        font-size: var(--text-4xl);
    }
    
    .section-header__subtitle {
        font-size: var(--text-lg);
    }
}

/* =============================================================================
   CARDS
   ============================================================================= */
.card {
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-elevated);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}

.card__icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-6);
}

.card__title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.card__description {
    font-size: var(--text-md);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}