/* -------------------------------------------------------------
   VARIABLES & DESIGN SYSTEM
   ------------------------------------------------------------- */
:root {
    /* Font Families */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'Fira Code', monospace;

    /* Theme - Dark (Default) */
    --bg-primary: #08090c;
    --bg-secondary: #0f111a;
    --bg-tertiary: #161925;
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    --accent-cyan: #00f2fe;
    --accent-cyan-rgb: 0, 242, 254;
    --accent-purple: #9d4edd;
    --accent-purple-rgb: 157, 78, 221;
    --accent-orange: #ff7e5f;
    --accent-orange-rgb: 255, 126, 95;

    --border-color: rgba(255, 255, 255, 0.06);
    --border-color-hover: rgba(255, 255, 255, 0.12);
    
    --glass-bg: rgba(15, 17, 26, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.4);

    --glow-opacity: 0.15;
    --grid-opacity: 0.4;
    
    --transition-speed: 0.35s;
    --transition-curve: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Theme - Light Override */
body.light-theme {
    --bg-primary: #f6f8fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eff2f6;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;

    --accent-cyan: #008fa3;
    --accent-cyan-rgb: 0, 143, 163;
    --accent-purple: #7b2cbf;
    --accent-purple-rgb: 123, 44, 191;
    --accent-orange: #d946ef;
    --accent-orange-rgb: 217, 70, 239;

    --border-color: rgba(15, 23, 42, 0.08);
    --border-color-hover: rgba(15, 23, 42, 0.16);
    
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(15, 23, 42, 0.08);
    --glass-shadow: rgba(15, 23, 42, 0.05);

    --glow-opacity: 0.08;
    --grid-opacity: 0.6;
}

/* -------------------------------------------------------------
   RESET & BASE STYLES
   ------------------------------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-speed) var(--transition-curve), 
                color var(--transition-speed) var(--transition-curve);
}

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

ul {
    list-style: none;
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* -------------------------------------------------------------
   DECORATIVE BACKGROUND ELEMENTS
   ------------------------------------------------------------- */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, var(--border-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
    mask-image: radial-gradient(circle at center, black 40%, transparent 95%);
    -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 95%);
    z-index: -5;
    pointer-events: none;
    opacity: var(--grid-opacity);
    transition: opacity var(--transition-speed) ease;
}

.glow-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(130px);
    z-index: -4;
    pointer-events: none;
    opacity: var(--glow-opacity);
    transition: opacity var(--transition-speed) ease, background var(--transition-speed) ease;
}

.orb-1 {
    top: -10%;
    left: 15%;
    width: 45vw;
    height: 45vw;
    background: radial-gradient(circle, rgba(var(--accent-cyan-rgb), 0.8) 0%, transparent 75%);
}

.orb-2 {
    bottom: -10%;
    right: 10%;
    width: 45vw;
    height: 45vw;
    background: radial-gradient(circle, rgba(var(--accent-purple-rgb), 0.8) 0%, transparent 75%);
}

/* -------------------------------------------------------------
   SCROLL REVEAL EFFECT
   ------------------------------------------------------------- */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--transition-curve), 
                transform 0.8s var(--transition-curve);
}

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

/* Delay classes for scroll reveal elements */
.scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
.scroll-reveal:nth-child(3) { transition-delay: 0.2s; }
.scroll-reveal:nth-child(4) { transition-delay: 0.3s; }
.scroll-reveal:nth-child(5) { transition-delay: 0.4s; }

/* -------------------------------------------------------------
   BUTTONS
   ------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    gap: 0.5rem;
    transition: all var(--transition-speed) var(--transition-curve);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(var(--accent-cyan-rgb), 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--accent-cyan-rgb), 0.35);
}

.btn-secondary {
    background-color: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
}

/* -------------------------------------------------------------
   HEADER & NAVIGATION
   ------------------------------------------------------------- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 30px var(--glass-shadow);
    transition: background-color var(--transition-speed) ease, 
                border-color var(--transition-speed) ease,
                padding var(--transition-speed) ease;
}

header.scrolled {
    padding: 0.5rem 0;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-symbol {
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-weight: 500;
}

.logo-text {
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0 2px;
}

.nav-list {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 5px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    transition: width var(--transition-speed) var(--transition-curve);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background: linear-gradient(135deg, rgba(var(--accent-cyan-rgb), 0.1), rgba(var(--accent-purple-rgb), 0.1));
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    color: var(--text-primary);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: linear-gradient(135deg, rgba(var(--accent-cyan-rgb), 0.2), rgba(var(--accent-purple-rgb), 0.2));
    border-color: var(--accent-cyan);
    transform: translateY(-1px);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Toggle Button */
#theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    transition: all var(--transition-speed) var(--transition-curve);
}

#theme-toggle:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color-hover);
    transform: scale(1.05);
}

#theme-toggle .sun-icon {
    display: none;
}

#theme-toggle .moon-icon {
    display: block;
}

body.light-theme #theme-toggle .sun-icon {
    display: block;
}

body.light-theme #theme-toggle .moon-icon {
    display: none;
}

/* Mobile Menu Toggle */
#mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 18px;
    z-index: 110;
}

#mobile-menu-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

#mobile-menu-toggle[aria-expanded="true"] .bar-1 {
    transform: translateY(8px) rotate(45deg);
}

#mobile-menu-toggle[aria-expanded="true"] .bar-2 {
    opacity: 0;
}

#mobile-menu-toggle[aria-expanded="true"] .bar-3 {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Overlay Menu */
#mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(var(--bg-primary), 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed) ease;
}

#mobile-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.mobile-link {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-speed) ease;
}

.mobile-link:hover {
    color: var(--accent-cyan);
    transform: scale(1.05);
}

.mobile-cta {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

/* -------------------------------------------------------------
   HERO SECTION
   ------------------------------------------------------------- */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 100px;
    padding-bottom: 50px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-tagline {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 1rem;
    margin-bottom: 1rem;
    display: block;
}

.hero-name {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 0.5rem;
}

.accent-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtext {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    min-height: 50px;
}

.typewriter-text {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cursor {
    color: var(--accent-orange);
    animation: blink 0.8s infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

/* Hero Visuals / Mockup Card */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.visual-wrapper {
    position: relative;
    width: 100%;
    max-width: 400px;
}

/* Floating Technology Indicators */
.tech-stack-floater {
    position: absolute;
    padding: 0.6rem 1rem;
    background-color: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px var(--glass-shadow);
    z-index: 10;
    animation: float 6s ease-in-out infinite;
}

.tech-stack-floater.fs {
    top: 5%;
    left: -15%;
    color: var(--accent-cyan);
    animation-delay: 0s;
}

.tech-stack-floater.db {
    bottom: 20%;
    right: -10%;
    color: var(--accent-orange);
    animation-delay: 2s;
}

.tech-stack-floater.backend {
    top: 50%;
    left: -20%;
    color: var(--accent-purple);
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(3deg); }
}

.avatar-card {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: linear-gradient(135deg, rgba(var(--accent-cyan-rgb), 0.1), rgba(var(--accent-purple-rgb), 0.1));
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 6px;
    position: relative;
    box-shadow: 0 20px 40px var(--glass-shadow);
    overflow: hidden;
}

.avatar-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        transparent, 
        rgba(var(--accent-cyan-rgb), 0.3), 
        rgba(var(--accent-purple-rgb), 0.3), 
        transparent 50%
    );
    animation: rotate-glow 8s linear infinite;
    z-index: 1;
}

@keyframes rotate-glow {
    100% { transform: rotate(360deg); }
}

.avatar-inner {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: var(--bg-secondary);
    border-radius: 18px;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.code-editor-mock {
    width: 88%;
    background-color: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    overflow: hidden;
    text-align: left;
}

.editor-header {
    display: flex;
    align-items: center;
    padding: 0.8rem 1rem;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    gap: 6px;
}

.editor-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.editor-dot.red { background-color: #ff5f56; }
.editor-dot.yellow { background-color: #ffbd2e; }
.editor-dot.green { background-color: #27c93f; }

.editor-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: auto;
}

.editor-body {
    padding: 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.6;
    overflow-x: auto;
}

.editor-body .keyword { color: #f92672; }
.editor-body .variable { color: #66d9ef; }
.editor-body .string { color: #a6e22e; }

/* Scroll Down Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    z-index: 10;
}

.scroll-indicator .mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.scroll-indicator .wheel {
    width: 4px;
    height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 2px;
    animation: scroll-wheel 1.6s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(10px); opacity: 0.2; }
    100% { transform: translateY(0); opacity: 1; }
}

.scroll-indicator .scroll-arrow {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    animation: arrow-bounce 1.6s infinite;
}

@keyframes arrow-bounce {
    0%, 100% { transform: translateY(0) rotate(45deg); opacity: 0.5; }
    50% { transform: translateY(5px) rotate(45deg); opacity: 1; }
}

/* -------------------------------------------------------------
   SECTION REUSABLE LAYOUTS
   ------------------------------------------------------------- */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4.5rem;
}

.section-subtitle {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 0.8rem;
}

.section-title {
    font-size: 2.6rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.section-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    margin: 1.2rem auto 0;
    border-radius: 2px;
}

/* -------------------------------------------------------------
   SOBRE MIM (ABOUT)
   ------------------------------------------------------------- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.lead-text {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-metrics {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.metric-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1.8rem;
    border-radius: 16px;
    text-align: center;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-speed) var(--transition-curve);
    overflow: hidden;
}

.metric-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-purple);
    box-shadow: 0 15px 35px rgba(var(--accent-purple-rgb), 0.15);
}

.metric-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* -------------------------------------------------------------
   HABILIDADES (SKILLS)
   ------------------------------------------------------------- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.skills-category-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.2rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-speed) var(--transition-curve);
}

.skills-category-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-color-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 10% 10%, rgba(var(--accent-cyan-rgb), 0.05), transparent 60%);
    pointer-events: none;
    z-index: 1;
}

#skill-card-backend .card-glow {
    background: radial-gradient(circle at 10% 10%, rgba(var(--accent-purple-rgb), 0.05), transparent 60%);
}

#skill-card-tools .card-glow {
    background: radial-gradient(circle at 10% 10%, rgba(var(--accent-orange-rgb), 0.05), transparent 60%);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

.category-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.text-cyan { color: var(--accent-cyan); }
.text-purple { color: var(--accent-purple); }
.text-orange { color: var(--accent-orange); }

.category-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    z-index: 2;
}

.skill-name-container {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.skill-name {
    color: var(--text-primary);
}

.skill-progress-bg {
    width: 100%;
    height: 6px;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress-bar {
    height: 100%;
    border-radius: 3px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.active .skill-progress-bar {
    transform: scaleX(1);
}

.bg-cyan { background: linear-gradient(90deg, var(--accent-cyan), #00c6ff); }
.bg-purple { background: linear-gradient(90deg, var(--accent-purple), #c77dff); }
.bg-orange { background: linear-gradient(90deg, var(--accent-orange), #f7a072); }

/* -------------------------------------------------------------
   PROJETOS (PROJECTS)
   ------------------------------------------------------------- */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3.5rem;
}

.filter-btn {
    padding: 0.6rem 1.4rem;
    font-size: 0.92rem;
    font-weight: 600;
    border-radius: 20px;
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed) var(--transition-curve);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-color-hover);
}

.filter-btn.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(var(--accent-cyan-rgb), 0.15);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-speed) var(--transition-curve);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-color-hover);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

.project-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(var(--accent-cyan-rgb), 0.08), transparent 70%);
    pointer-events: none;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.project-card:hover .project-glow {
    opacity: 1;
}

.project-img-container {
    position: relative;
    height: 200px;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.project-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img-placeholder {
    transform: scale(1.05);
}

.gradient-1 { background: linear-gradient(135deg, #0f2027, #203a43, #2c5364); }
.gradient-2 { background: linear-gradient(135deg, #1f4037, #99f2c8); }
.gradient-3 { background: linear-gradient(135deg, #3a1c71, #d76d77, #ffaf7b); }

.project-icon {
    font-size: 3.5rem;
    opacity: 0.65;
    transition: transform 0.5s var(--transition-curve);
}

.project-card:hover .project-icon {
    transform: scale(1.1) rotate(-5deg);
}

.project-badge {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    background-color: rgba(var(--bg-primary), 0.7);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.project-info {
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    position: relative;
    z-index: 2;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.project-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.8rem;
}

.project-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
}

.project-links {
    display: flex;
    gap: 1.2rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.project-link:hover {
    color: var(--accent-cyan);
}

.project-link svg {
    transition: transform var(--transition-speed) ease;
}

.project-link:hover svg {
    transform: translateY(-2px);
}

/* -------------------------------------------------------------
   EXPERIÊNCIA (TIMELINE)
   ------------------------------------------------------------- */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 8px;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
}

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

.timeline-dot {
    position: absolute;
    left: -30px;
    top: 8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 3px solid var(--accent-cyan);
    z-index: 2;
    transition: all var(--transition-speed) ease;
}

#exp-item-2 .timeline-dot { border-color: var(--accent-purple); }
#exp-item-3 .timeline-dot { border-color: var(--accent-orange); }

.timeline-item:hover .timeline-dot {
    transform: scale(1.2);
    box-shadow: 0 0 12px var(--accent-cyan);
}

#exp-item-2:hover .timeline-dot { box-shadow: 0 0 12px var(--accent-purple); }
#exp-item-3:hover .timeline-dot { box-shadow: 0 0 12px var(--accent-orange); }

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.6rem;
}

.timeline-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transition: all var(--transition-speed) var(--transition-curve);
}

.timeline-content:hover {
    transform: translateX(5px);
    border-color: var(--border-color-hover);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
}

.timeline-content h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.timeline-company {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* -------------------------------------------------------------
   CONECTAR (CONTACT CARDS)
   ------------------------------------------------------------- */
.contact-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
    transition: all var(--transition-speed) var(--transition-curve);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(var(--accent-cyan-rgb), 0.04) 0%, transparent 60%);
    pointer-events: none;
    z-index: 1;
}

#contact-linkedin::before {
    background: radial-gradient(circle at center, rgba(var(--accent-purple-rgb), 0.04) 0%, transparent 60%);
}

#contact-email::before {
    background: radial-gradient(circle at center, rgba(var(--accent-orange-rgb), 0.04) 0%, transparent 60%);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.35);
}

.contact-card:hover#contact-github { border-color: var(--accent-cyan); }
.contact-card:hover#contact-linkedin { border-color: var(--accent-purple); }
.contact-card:hover#contact-email { border-color: var(--accent-orange); }

.contact-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
    transition: all var(--transition-speed) var(--transition-curve);
}

.contact-card:hover .contact-card-icon {
    transform: scale(1.1);
    background-color: var(--bg-primary);
}

.contact-card:hover#contact-github .contact-card-icon { border-color: var(--accent-cyan); box-shadow: 0 0 20px rgba(var(--accent-cyan-rgb), 0.2); }
.contact-card:hover#contact-linkedin .contact-card-icon { border-color: var(--accent-purple); box-shadow: 0 0 20px rgba(var(--accent-purple-rgb), 0.2); }
.contact-card:hover#contact-email .contact-card-icon { border-color: var(--accent-orange); box-shadow: 0 0 20px rgba(var(--accent-orange-rgb), 0.2); }

.contact-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.contact-username {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

.contact-action {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: color var(--transition-speed) ease, transform var(--transition-speed) ease;
    position: relative;
    z-index: 2;
}

.contact-card:hover .contact-action {
    color: var(--text-primary);
}

.contact-card:hover#contact-github .contact-action { color: var(--accent-cyan); }
.contact-card:hover#contact-linkedin .contact-action { color: var(--accent-purple); }
.contact-card:hover#contact-email .contact-action { color: var(--accent-orange); }

/* -------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------- */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

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

.footer-copy {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 1.8rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* -------------------------------------------------------------
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ------------------------------------------------------------- */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }

    .header-container {
        padding: 0 1.5rem;
    }

    .hero-name {
        font-size: 3.5rem;
    }

    .hero-subtext {
        font-size: 1.8rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-metrics {
        flex-direction: row;
        justify-content: space-between;
    }

    .metric-card {
        flex: 1;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    section {
        padding: 70px 0;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    #mobile-menu-toggle {
        display: flex;
    }

    #nav-menu {
        display: none;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-description {
        margin: 0 auto 2.5rem;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
        margin-bottom: 1rem;
    }

    .visual-wrapper {
        max-width: 320px;
    }

    .scroll-indicator {
        bottom: -30px;
    }

    /* Ajustar flutuadores no mobile para evitar sobreposições e corte */
    .tech-stack-floater {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }
    .tech-stack-floater.fs { left: 0%; top: 2%; }
    .tech-stack-floater.db { right: 0%; bottom: 15%; }
    .tech-stack-floater.backend { left: -5%; top: 45%; }

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

    /* Corrigir desalinhamento da bolinha na linha do tempo */
    .timeline {
        padding-left: 20px;
    }

    .timeline-dot {
        left: -20px;
    }

    /* Otimizar grids para evitar estouro horizontal em telas menores */
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .skills-category-card {
        padding: 1.5rem;
    }

    .project-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .project-info {
        padding: 1.5rem;
    }

    .contact-cards-container {
        gap: 1.5rem;
    }

    .contact-card {
        padding: 2.2rem 1.5rem;
    }

    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .hero-name {
        font-size: 2.6rem;
    }

    .hero-subtext {
        font-size: 1.4rem;
        min-height: auto;
    }

    /* Esconder flutuadores em celulares pequenos para layout limpo e sem sobreposição */
    .tech-stack-floater {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .about-metrics {
        gap: 1.2rem;
    }

    .metric-card {
        padding: 1.2rem;
    }

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

    .filter-btn {
        flex: 1 1 40%;
        text-align: center;
    }
}