/* ==========================================================================
   Design System & Custom Properties (Cyber-Tech Dark)
   ========================================================================== */
:root {
    --bg-dark: #080c14;               /* Deep Tech Black */
    --bg-card: rgba(17, 24, 39, 0.6);  /* Dark Charcoal Glass */
    --border-color: rgba(6, 182, 212, 0.15); /* Sleek Neon Cyan Border */
    --border-hover: rgba(6, 182, 212, 0.5);
    
    --primary: #06b6d4;               /* Neon Cyan */
    --primary-rgb: 6, 182, 212;
    --primary-glow: rgba(6, 182, 212, 0.25);
    
    --secondary: #8b5cf6;             /* Electric Violet */
    --secondary-rgb: 139, 92, 246;
    
    --text-primary: #f3f4f6;          /* Crisp Off-White */
    --text-muted: #9ca3af;             /* Muted Slate Grey */
    --text-dark: #1f2937;
    
    --healthy-emerald: #10b981;       /* System healthy green */
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    
    --font-tech: 'Space Grotesk', sans-serif;
    --font-body: 'Montserrat', sans-serif;
    --font-mono: 'Fira Code', monospace;
}

/* ==========================================================================
   Reset & Base Settings
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.65;
    overflow-x: hidden;
    background-image: 
        radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.08) 0, transparent 40%),
        radial-gradient(at 100% 0%, rgba(139, 92, 246, 0.08) 0, transparent 40%),
        radial-gradient(at 50% 100%, rgba(6, 182, 212, 0.05) 0, transparent 50%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: #111827;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.text-center { text-align: center; }
.w-full { width: 100%; }

/* ==========================================================================
   Typography & Sections
   ========================================================================== */
.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 0.8rem;
}

.section-title {
    font-family: var(--font-tech);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 1.05rem;
    font-weight: 300;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 4rem auto;
    line-height: 1.5;
}

.sobre-section, .skills-section, .projects-section, .timeline-section, .contact-section {
    padding: 7rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.95rem 2.2rem;
    font-family: var(--font-tech);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid transparent;
    transition: var(--transition-smooth);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(6, 182, 212, 0.05);
    color: var(--primary);
    transform: translateY(-2px);
}

/* ==========================================================================
   Glassmorphism System
   ========================================================================== */
.card-glass {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.card-glass:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.08);
}

.card-glass-glow {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.card-glass-glow:hover {
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow: 
        0 0 20px rgba(6, 182, 212, 0.15),
        0 15px 40px rgba(0, 0, 0, 0.4);
    transform: translateY(-4px);
}

/* ==========================================================================
   Header / Navigation Bar
   ========================================================================== */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(8, 12, 20, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(6, 182, 212, 0.08);
    transition: var(--transition-smooth);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.3rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: var(--font-tech);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 1.5px;
    color: var(--primary);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#nav-menu ul {
    display: flex;
    list-style: none;
    gap: 2.2rem;
}

.nav-link {
    font-family: var(--font-tech);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

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

.mobile-menu-toggle {
    display: none;
    color: var(--text-primary);
    font-size: 1.5rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 5rem 2rem;
}

.hero-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--primary);
    background: rgba(6, 182, 212, 0.08);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    border: 1px solid rgba(6, 182, 212, 0.15);
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.hero-title {
    font-family: var(--font-tech);
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 40%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 2.5rem;
    text-align: justify;
}

.hero-cta-container {
    display: flex;
    gap: 1.2rem;
}

.hero-media {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Viewfinder corner brackets around profile photo */
.profile-image-frame {
    position: relative;
    width: 100%;
    max-width: 360px;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 8px;
    background: rgba(17, 24, 39, 0.4);
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    border-radius: 4px;
    filter: grayscale(15%) brightness(95%);
    transition: var(--transition-smooth);
}

.profile-image-frame:hover .profile-image {
    filter: grayscale(0%) brightness(100%);
    transform: scale(1.02);
}

.corner-bracket {
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid var(--primary);
    z-index: 5;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.profile-image-frame:hover .corner-bracket {
    width: 24px;
    height: 24px;
}

.top-left { top: 0; left: 0; border-right: none; border-bottom: none; }
.top-right { top: 0; right: 0; border-left: none; border-bottom: none; }
.bottom-left { bottom: 0; left: 0; border-right: none; border-top: none; }
.bottom-right { bottom: 0; right: 0; border-left: none; border-top: none; }

.image-overlay-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 50%, rgba(8, 12, 20, 0.4) 100%);
    pointer-events: none;
}

.server-status-card {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    margin-top: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    border-color: rgba(16, 185, 129, 0.2);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--healthy-emerald);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    animation: statusPulse 2s infinite;
}

.tech-code {
    color: var(--text-muted);
    border-left: 1px solid rgba(255,255,255,0.1);
    padding-left: 0.8rem;
}

@keyframes statusPulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.25); opacity: 0.6; }
    100% { transform: scale(1); opacity: 1; }
}

/* ==========================================================================
   Manifesto Section
   ========================================================================== */
.sobre-section {
    background: rgba(17, 24, 39, 0.2);
}

.manifesto-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4.5rem;
    align-items: center;
}

.manifesto-text-col {
    padding: 3rem;
    border-radius: 12px;
}

.manifesto-title {
    font-family: var(--font-tech);
    font-size: 2rem;
    color: #ffffff;
    line-height: 1.3;
    margin-bottom: 2rem;
    letter-spacing: -0.5px;
    border-left: 3px solid var(--primary);
    padding-left: 1.2rem;
}

.lead-text {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
}

.body-text-justify {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.2rem;
    text-align: justify;
}

.body-text-justify:last-child {
    margin-bottom: 0;
}

.manifesto-stats-col {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.metric-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-radius: 8px;
    border-left: 3px solid var(--secondary);
}

.metric-card:nth-child(even) {
    border-left-color: var(--primary);
}

.metric-num {
    font-family: var(--font-tech);
    font-size: 2.2rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1;
    margin-bottom: 0.4rem;
}

.metric-name {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 2rem;
}

.skill-card {
    padding: 2.5rem 2rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.skill-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: rgba(6, 182, 212, 0.05);
    border: 1px solid rgba(6, 182, 212, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.skill-card:nth-child(even) .skill-icon {
    color: var(--secondary);
    background: rgba(139, 92, 246, 0.05);
    border-color: rgba(139, 92, 246, 0.1);
}

.skill-card:hover .skill-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--primary);
    color: #ffffff;
}

.skill-card:nth-child(even):hover .skill-icon {
    background: var(--secondary);
}

.skill-title {
    font-family: var(--font-tech);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: #ffffff;
}

.skill-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.skill-tags span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

.project-card {
    padding: 2.5rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.project-category {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.15);
    color: var(--healthy-emerald);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--healthy-emerald);
}

.project-title {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.8rem;
    letter-spacing: -0.5px;
}

.project-description {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 2rem;
    text-align: justify;
}

.project-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.2rem;
    margin-top: auto;
}

.detail-item {
    display: flex;
    flex-direction: column;
}

.detail-lbl {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.2rem;
}

.detail-val {
    font-family: var(--font-tech);
    font-size: 0.9rem;
    font-weight: 600;
    color: #ffffff;
}

.cockpit-cta-block {
    max-width: 750px;
    margin: 4.5rem auto 0 auto;
    padding: 3.5rem;
    border-radius: 12px;
}

.cockpit-title {
    font-family: var(--font-tech);
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
    color: #ffffff;
}

.cockpit-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 500px;
    margin: 0 auto 2rem auto;
    line-height: 1.5;
}

/* ==========================================================================
   Timeline / Trajetória
   ========================================================================== */
.timeline-section {
    background: rgba(17, 24, 39, 0.1);
}

.timeline-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 2.5rem;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 5px;
    bottom: 5px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    opacity: 0.25;
}

.timeline-node {
    position: relative;
    padding: 2.2rem;
    border-radius: 8px;
    margin-bottom: 2.5rem;
}

.timeline-node:last-child {
    margin-bottom: 0;
}

.timeline-node::before {
    content: '';
    position: absolute;
    left: calc(-2.5rem - 8px + 3px);
    top: 2.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--bg-dark);
    border: 3px solid var(--primary);
    z-index: 2;
    transition: var(--transition-smooth);
}

.timeline-node:nth-child(even)::before {
    border-color: var(--secondary);
}

.timeline-node:hover::before {
    transform: scale(1.3);
    background-color: var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.4rem;
    display: inline-block;
}

.timeline-node:nth-child(even) .timeline-date {
    color: var(--secondary);
}

.timeline-title {
    font-family: var(--font-tech);
    font-size: 1.35rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.2rem;
}

.timeline-org {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    display: block;
    margin-bottom: 1.2rem;
}

.timeline-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
    text-align: justify;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
    align-items: flex-start;
}

#contact-form {
    padding: 3rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-family: var(--font-tech);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.85rem 1rem;
    color: #ffffff;
    font-family: inherit;
    font-size: 0.92rem;
    transition: var(--transition-fast);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2306b6d4'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(15, 23, 42, 0.6);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #4b5563;
}

.icon-spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.contact-info-col {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.contact-card {
    padding: 1.8rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.contact-icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-card:nth-child(even) .contact-icon-circle {
    color: var(--secondary);
    background: rgba(139, 92, 246, 0.08);
    border-color: rgba(139, 92, 246, 0.15);
}

.contact-text h4 {
    font-family: var(--font-tech);
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.2rem;
}

.contact-text p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-family: var(--font-tech);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
}

.contact-card:nth-child(even) .contact-link {
    color: var(--secondary);
}

.contact-link:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Footer
   ========================================================================== */
#main-footer {
    background-color: #04060a;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    padding: 4rem 2rem;
    font-size: 0.85rem;
}

.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand p {
    margin-top: 0.4rem;
    font-size: 0.8rem;
}

.footer-copy {
    text-align: right;
}

.dev-credits {
    font-size: 0.7rem;
    margin-top: 0.2rem;
    color: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Floating WhatsApp Button
   ========================================================================== */
.whatsapp-floating-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 90;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: #25D366;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
    transition: var(--transition-smooth);
}

.whatsapp-floating-btn i {
    width: 26px;
    height: 26px;
}

.whatsapp-floating-btn:hover {
    transform: scale(1.08) rotate(8deg);
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.5);
}

.whatsapp-tooltip {
    position: absolute;
    right: 75px;
    background-color: #111827;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-fast);
}

.whatsapp-floating-btn:hover .whatsapp-tooltip {
    opacity: 1;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 992px) {
    html {
        font-size: 15px;
    }
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3.5rem;
        text-align: center;
    }
    .hero-content {
        align-items: center;
    }
    .hero-subtitle {
        text-align: center;
    }
    .manifesto-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .sobre-section, .skills-section, .projects-section, .timeline-section, .contact-section {
        padding: 5rem 1.5rem;
    }
    .hero-title {
        font-size: 2.8rem;
    }
    .mobile-menu-toggle {
        display: block;
    }
    #nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(8, 12, 20, 0.98);
        border-bottom: 1px solid rgba(6, 182, 212, 0.1);
        padding: 2rem;
    }
    #nav-menu.active {
        display: block;
    }
    #nav-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    .footer-copy {
        text-align: center;
    }
}