/* ==========================================
   RESET E CONFIGURAÇÕES BÁSICAS
   ========================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ==========================================
   HEADER E NAVEGAÇÃO
   ========================================== */

header {
    position: fixed;
    width: 100%;
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: var(--z-header);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

header h1 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

nav {
    display: flex;
    gap: var(--spacing-lg);
}

nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-normal);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-lighter);
    transition: width var(--transition-normal);
}

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

nav a:hover::after {
    width: 100%;
}

/* Botão de Toggle de Tema */
.theme-toggle {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.2rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
    color: var(--primary-lighter);
    transform: scale(1.1);
}

/* Menu Toggle (Mobile) */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

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

main {
    max-width: 900px;
    margin: 100px auto var(--spacing-lg);
    padding: 0 var(--spacing-sm);
}

section {
    background: var(--card-bg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

h2 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-2xl);
}

/* ==========================================
   SEÇÃO INTRODUÇÃO
   ========================================== */

#introducao .introducao-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

#introducao img {
    width: 140px;
    height: 140px;
    border-radius: var(--border-radius-full);
    object-fit: cover;
    border: 3px solid var(--primary-color);
    flex-shrink: 0;
}

#introducao p {
    flex: 1;
    font-size: var(--font-size-lg);
    color: var(--text-light);
}

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

.timeline {
    border-left: 3px solid var(--primary-color);
    padding-left: var(--spacing-md);
    list-style: none;
}

.timeline li {
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: var(--spacing-md);
}

.timeline li::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    border-radius: var(--border-radius-full);
    border: 3px solid var(--white);
    box-shadow: var(--shadow-sm);
}

/* ==========================================
   CARDS
   ========================================== */

.card-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.card {
    background: var(--accent-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(11, 61, 145, 0.4);
}

.card-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-family: var(--font-heading);
}

/* ==========================================
   HOMELAB LINKS
   ========================================== */

.homelab-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.homelab-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    transition: background var(--transition-normal), transform var(--transition-fast);
}

.homelab-links a:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* ==========================================
   SOCIAL ICONS
   ========================================== */

.social-icons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-icons a {
    color: var(--primary-color);
    font-size: 1.5rem;
    text-decoration: none;
    transition: color var(--transition-normal), transform var(--transition-fast);
}

.social-icons a:hover {
    color: var(--primary-lighter);
    transform: scale(1.2);
}

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

footer {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-lg);
}

.footer-tech {
    margin-top: var(--spacing-xs);
    opacity: 0.8;
}

.footer-tech i {
    color: #ff6b6b;
    animation: heartbeat 1.5s ease-in-out infinite;
}

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

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

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   UTILITÁRIOS
   ========================================== */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ==========================================
   MEDIA QUERIES - RESPONSIVIDADE
   ========================================== */

/* Tablets e dispositivos médios */
@media (max-width: 968px) {
    main {
        max-width: 700px;
    }

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

/* Mobile e dispositivos pequenos */
@media (max-width: 768px) {
    header {
        padding: var(--spacing-sm);
        flex-wrap: wrap;
    }

    header h1 {
        font-size: 1.2rem;
    }

    .menu-toggle {
        display: flex;
    }

    .theme-toggle {
        order: -1;
        margin-right: auto;
        margin-left: var(--spacing-sm);
    }

    nav {
        width: 100%;
        max-height: 0;
        overflow: hidden;
        flex-direction: column;
        gap: 0;
        transition: max-height var(--transition-normal);
    }

    nav.active {
        max-height: 400px;
        margin-top: var(--spacing-sm);
    }

    nav a {
        display: block;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    nav a::after {
        display: none;
    }

    main {
        margin-top: 80px;
    }

    section {
        padding: var(--spacing-md);
    }

    #introducao .introducao-content {
        flex-direction: column;
        text-align: center;
    }

    #introducao img {
        width: 120px;
        height: 120px;
    }

    .card-list {
        grid-template-columns: 1fr;
    }

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

    .homelab-links a {
        width: 100%;
        justify-content: center;
    }
}

/* Dispositivos muito pequenos */
@media (max-width: 480px) {
    header h1 {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    #introducao img {
        width: 100px;
        height: 100px;
    }

    section {
        padding: var(--spacing-sm);
    }
}

/* Telas grandes */
@media (min-width: 1200px) {
    main {
        max-width: 1100px;
    }

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

.contact-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.contact-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background-color: var(--secondary-color);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: background-color 0.3s ease;
    font-weight: 600;
}

.contact-links a:hover {
    background-color: var(--accent-color);
}

.contact-links i {
    font-size: 1.1rem;
}