/**
 * Brain Developer - Layout Styles
 * ================================
 * Estilos de layout: containers, grids, header, footer, seções.
 * 
 * Depende de: tokens.css, base.css
 */

/* ==========================================
   CONTAINER
   ========================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-12) var(--container-padding);
}

.container--sm {
    max-width: 800px;
}

.container--lg {
    max-width: 1400px;
}

.container--fluid {
    max-width: 100%;
}

/* ==========================================
   MAIN CONTAINER (Card principal)
   ========================================== */

.main-container {
    background: var(--color-bg-primary);
    margin: calc(var(--spacing-8) * -1) var(--spacing-4) 0;
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
    z-index: var(--z-base);
}

/* ==========================================
   HEADER / HERO
   ========================================== */

.header {
    padding: var(--spacing-8) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.hero-section {
    padding: var(--spacing-16) var(--spacing-4);
    text-align: center;
    color: var(--color-text-inverse);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.08), transparent 35%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.05), transparent 30%);
    pointer-events: none;
}

.hero-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-4);
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    animation: slideInDown 0.8s ease-out;
    line-height: var(--line-height-tight);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-6);
    opacity: 0.92;
    animation: fadeIn 0.8s ease-out 0.3s both;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--line-height-relaxed);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-6);
    margin-top: var(--spacing-10);
    animation: slideInUp 0.8s ease-out 0.6s both;
    flex-wrap: wrap;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
    animation: slideInUp 0.8s ease-out 0.5s both;
    margin-top: var(--spacing-6);
}

/* ==========================================
   SEÇÕES DE CONTEÚDO
   ========================================== */

.content-section {
    margin-bottom: var(--spacing-16);
}

.content-section--fade {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity var(--duration-slower) ease-out,
        transform var(--duration-slower) ease-out;
}

.content-section--fade.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-10);
}

.section-title {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-3xl));
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-4);
    position: relative;
    display: inline-block;
    line-height: var(--line-height-tight);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.section-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    max-width: 680px;
    margin: var(--spacing-4) auto 0;
    line-height: var(--line-height-relaxed);
}

/* Seções com fundos coloridos */
.section-box {
    border-radius: var(--radius-2xl);
    padding: var(--spacing-10);
    margin: var(--spacing-10) 0;
    border: var(--border-width-thin) solid transparent;
}

.section-box--blue {
    background: var(--gradient-section-blue);
    border-color: rgba(59, 130, 246, 0.1);
}

.section-box--purple {
    background: var(--gradient-section-purple);
    border-color: rgba(139, 92, 246, 0.1);
}

.section-box--green {
    background: var(--gradient-section-green);
    border-color: rgba(16, 185, 129, 0.1);
}

.section-box--yellow {
    background: var(--gradient-section-yellow);
    border-color: rgba(245, 158, 11, 0.1);
}

.section-box--red {
    background: var(--gradient-section-red);
    border-color: rgba(239, 68, 68, 0.1);
}

.section-box--cyan {
    background: var(--gradient-section-cyan);
    border-color: rgba(6, 182, 212, 0.1);
}

/* ==========================================
   GRIDS
   ========================================== */

.grid {
    display: grid;
    gap: var(--spacing-8);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid--auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--auto-fit-sm {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--auto-fit-lg {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* ==========================================
   FLEXBOX UTILITIES
   ========================================== */

.flex {
    display: flex;
}

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

.flex--between {
    justify-content: space-between;
    align-items: center;
}

.flex--wrap {
    flex-wrap: wrap;
}

.flex--column {
    flex-direction: column;
}

.flex--gap-sm {
    gap: var(--spacing-4);
}

.flex--gap-md {
    gap: var(--spacing-8);
}

.flex--gap-lg {
    gap: var(--spacing-12);
}

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

.footer {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: var(--spacing-12) var(--container-padding) var(--spacing-8);
    text-align: center;
    margin-top: var(--spacing-16);
}

.footer-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
}

.footer-subtitle {
    color: var(--color-neutral-400);
    margin-bottom: var(--spacing-8);
}

.footer-copyright {
    margin-top: var(--spacing-8);
    opacity: 0.7;
    font-size: var(--font-size-sm);
}

.footer-nav {
    margin-top: var(--spacing-8);
}

.footer-nav a {
    color: var(--color-accent-400);
    font-weight: var(--font-weight-semibold);
    margin: 0 var(--spacing-4);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-accent-300);
}

/* ==========================================
   NAVEGAÇÃO PRINCIPAL (Cards)
   ========================================== */

.nav-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-8);
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.main-nav {
    margin: var(--spacing-12) 0;
    animation: slideInUp 1s ease-out 0.8s both;
}

/* ==========================================
   MAIN CONTENT
   ========================================== */

.main-content {
    max-width: var(--container-max-width);
    margin: var(--spacing-16) auto;
    padding: 0 var(--container-padding);
}

/* ==========================================
   ROADMAP / TIMELINE
   ========================================== */

.roadmap-timeline {
    position: relative;
    padding: var(--spacing-8) 0;
    max-width: 800px;
    margin: 0 auto;
}

.roadmap-timeline__item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-8);
    position: relative;
}

.roadmap-timeline__item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 25px;
    top: 60px;
    width: 2px;
    height: calc(100% + var(--spacing-4));
    background: var(--gradient-primary);
}

.roadmap-timeline__marker {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    margin-right: var(--spacing-6);
    box-shadow: var(--shadow-primary);
    flex-shrink: 0;
    z-index: 1;
}

.roadmap-timeline__content {
    background: var(--color-surface-secondary);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    flex: 1;
    border-left: 3px solid var(--color-primary-500);
    transition: all var(--transition-normal);
}

.roadmap-timeline__content:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.roadmap-timeline__content h4 {
    color: var(--color-primary-500);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-lg);
}

.roadmap-timeline__content p {
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
}

/* Legacy classes (backward compatibility) */
.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-8);
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 25px;
    top: 60px;
    width: 2px;
    height: calc(100% + var(--spacing-4));
    background: var(--gradient-primary);
}

.timeline-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    margin-right: var(--spacing-6);
    box-shadow: var(--shadow-primary);
    flex-shrink: 0;
}

.timeline-content {
    background: var(--color-neutral-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    flex: 1;
    border-left: 3px solid var(--color-primary-500);
}

.timeline-content h4 {
    color: var(--color-primary-600);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
}

/* ==========================================
   ANIMAÇÕES
   ========================================== */

@keyframes float {
    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(1deg);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   RESPONSIVIDADE
   ========================================== */

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-8) var(--container-padding-mobile);
    }

    .main-container {
        margin: calc(var(--spacing-4) * -1) var(--spacing-2) 0;
        border-radius: var(--radius-2xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-6);
        align-items: center;
    }

    .hero-badges {
        flex-direction: column;
        align-items: center;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .section-box {
        padding: var(--spacing-8);
        border-radius: var(--radius-2xl);
    }

    .nav-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
        padding: 0 var(--spacing-4);
    }

    .timeline-item,
    .roadmap-timeline__item {
        flex-direction: column;
        text-align: center;
    }

    .timeline-item::after,
    .roadmap-timeline__item::after {
        display: none;
    }

    .timeline-number,
    .roadmap-timeline__marker {
        margin: 0 auto var(--spacing-4);
    }

    .roadmap-timeline__content {
        border-left: none;
        border-top: 3px solid var(--color-primary-500);
    }

    .footer {
        padding: var(--spacing-8) var(--spacing-4) var(--spacing-6);
    }
}