/**
 * CS AI Platform - Public Layout Styles
 *
 * Styles for marketing/public pages (homepage, etc.)
 * Traditional header/footer with hero sections.
 */

/* ========================================
   PUBLIC BODY
   ======================================== */

body.cs-ai-public {
    background-color: var(--color-white);
}

/* ========================================
   PUBLIC HEADER
   ======================================== */

.public-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--border-color-light);
}

.public-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: var(--space-8);
}

/* Logo */
.public-header__logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-secondary);
    text-decoration: none;
    flex-shrink: 0;
}

.public-header__logo:hover {
    color: var(--color-primary);
}

/* Navigation */
.public-header__nav {
    flex: 1;
}

.public-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
    margin: 0;
    padding: 0;
}

.public-nav a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.public-nav a:hover {
    color: var(--color-primary);
}

/* Auth actions */
.public-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

.public-header__login {
    color: var(--color-text);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.public-header__login:hover {
    color: var(--color-primary);
}

/* Mobile toggle */
.public-header__mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.public-header__mobile-toggle span {
    display: block;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 1px;
    transition: all var(--transition-fast);
}

.public-header__mobile-toggle.is-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.public-header__mobile-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.public-header__mobile-toggle.is-active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   PUBLIC MAIN
   ======================================== */

.public-main {
    min-height: calc(100vh - 72px - 300px);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    padding: var(--space-16) 0 var(--space-20);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-bg-alt) 100%);
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero__content {
    max-width: 560px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background-color: rgba(111, 186, 108, 0.15);
    color: var(--color-success);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

.hero__badge svg {
    width: 16px;
    height: 16px;
}

.hero__title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    color: var(--color-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
}

.hero__actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero__image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__image img {
    max-width: 100%;
    height: auto;
}

/* Placeholder for hero illustration */
.hero__illustration {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--color-adriatic) 0%, var(--color-blueberry) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* ========================================
   FEATURES / PILLARS SECTION
   ======================================== */

.pillars {
    padding: var(--space-20) 0;
    background-color: var(--color-white);
}

.pillars__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.pillars__title {
    margin-bottom: var(--space-4);
}

.pillars__subtitle {
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
}

.pillars__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.pillar-card {
    padding: var(--space-8);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    text-align: center;
}

.pillar-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-6);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
}

.pillar-card--safety .pillar-card__icon {
    color: var(--color-success);
}

.pillar-card--curriculum .pillar-card__icon {
    color: var(--color-primary);
}

.pillar-card--teacher .pillar-card__icon {
    color: var(--color-accent);
}

.pillar-card__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
}

.pillar-card__text {
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ========================================
   TOOLS PREVIEW SECTION
   ======================================== */

.tools-preview {
    padding: var(--space-20) 0;
    background-color: var(--color-bg-alt);
}

.tools-preview__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.tools-preview__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.tool-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

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

.tool-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    font-size: var(--font-size-xl);
}

.tool-card--comprehension .tool-card__icon {
    background-color: rgba(205, 128, 185, 0.15);
    color: var(--color-lilac);
}

.tool-card--model-text .tool-card__icon {
    background-color: rgba(255, 184, 0, 0.15);
    color: var(--color-accent);
}

.tool-card__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2);
}

.tool-card__text {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

/* ========================================
   CTA SECTION
   ======================================== */

.cta-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-blueberry) 100%);
    color: var(--color-white);
    text-align: center;
}

.cta-section__title {
    color: var(--color-white) !important;
    margin-bottom: var(--space-4);
    text-shadow: none;
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: var(--color-white);
}

.cta-section__text {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: none;
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   PUBLIC FOOTER
   ======================================== */

.public-footer {
    background-color: var(--color-dark) !important;
    color: var(--color-white);
    padding: var(--space-16) 0 var(--space-8);
}

.public-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.public-footer__logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white) !important;
    text-decoration: none;
    display: block;
    margin-bottom: var(--space-4);
}

.public-footer__logo:hover {
    color: var(--color-primary) !important;
}

.public-footer__tagline {
    color: #cccccc !important;
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.public-footer__links h4 {
    color: var(--color-white) !important;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.public-footer__links ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.public-footer__links li {
    margin-bottom: var(--space-2);
}

.public-footer__links a {
    color: #cccccc !important;
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.public-footer__links a:hover {
    color: var(--color-white) !important;
}

.public-footer__bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.public-footer__copyright {
    color: #cccccc !important;
    font-size: var(--font-size-sm);
    margin: 0;
}

.public-footer__compliance {
    color: #999999 !important;
    font-size: var(--font-size-xs);
    margin: 0;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__content {
        max-width: 100%;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__image {
        order: -1;
    }

    .hero__illustration {
        max-width: 360px;
    }

    .pillars__grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .public-footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .public-header__nav,
    .public-header__actions {
        display: none;
    }

    .public-header__mobile-toggle {
        display: flex;
    }

    .public-header__nav.is-open {
        display: block;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: var(--space-4);
        border-bottom: 1px solid var(--border-color-light);
        box-shadow: var(--shadow-lg);
    }

    .public-header__nav.is-open .public-nav {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .public-header__nav.is-open .public-nav a {
        display: block;
        padding: var(--space-3) 0;
        border-bottom: 1px solid var(--border-color-light);
    }

    .public-footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .public-footer__bottom {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }
}