/* ========================================
   PREMIUM DARK THEME - ENTERPRISE DESIGN
   Natan Souza Portfolio 2.0
   ======================================== */

/* ========================================
   1. CSS RESET & VARIABLES
   ======================================== */

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

:root {
    /* Color Palette - Dark Premium */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-elevated: #1f1f1f;
    
    /* Galaxy Background */
    --galaxy-bg-1: #1a2a45;
    --galaxy-bg-2: #0d1625;
    --galaxy-bg-3: #050a12;
    
    /* Accent Colors */
    --color-accent-primary: #00C6FF;
    --color-accent-secondary: #0072FF;
    --color-accent-success: #10B981;
    
    /* Typography */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B4B4B4;
    --color-text-muted: #6B6B6B;
    
    /* Borders & Strokes */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(0, 198, 255, 0.3);
    
    /* Gradients */
    --gradient-accent: linear-gradient(270deg, #00C6FF 0%, #0072FF 52.88%, #000C40 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(10, 10, 10, 0.4) 0%, rgba(10, 10, 10, 0.85) 100%);
    
    /* Saved Gradients (Unused) */
    --gradient-rainbow-spectrum: linear-gradient(90deg, #025FD6 20%, #745BCC 40%, #EB5AC4 60%, #FE7FA7 80%, #FBB139 100%);
    --gradient-warm-sunset: linear-gradient(270deg, #FDAE03 0%, #E5057E 52.88%, #930183 100%);
    
    /* Spacing System */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Typography Scale */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 4rem;
    --font-size-7xl: 5rem;
    --font-size-8xl: 7rem;
    
    /* Line Heights */
    --line-height-tight: 1.1;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 32px rgba(0, 198, 255, 0.3);
    --shadow-glow-hover: 0 0 48px rgba(0, 198, 255, 0.5);
}

/* Light Mode - Premium "Daylight" Theme */
body.light-mode {
    /* Backgrounds - Clean, Warm & Sophisticated */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F8FAFC; /* Slate 50 */
    --color-bg-tertiary: #F1F5F9;  /* Slate 100 */
    --color-bg-elevated: #FFFFFF;
    
    /* Typography - High Contrast & Readable */
    --color-text-primary: #0F172A; /* Slate 900 */
    --color-text-secondary: #475569; /* Slate 600 */
    --color-text-muted: #94A3B8;   /* Slate 400 */
    
    /* Borders - Subtle & Refined */
    --color-border: rgba(148, 163, 184, 0.2);
    --color-border-hover: rgba(0, 198, 255, 0.8);
    
    /* Gradients & Overlays */
    --gradient-overlay: linear-gradient(180deg, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.95) 100%);
    
    /* Shadows - Soft & Modern */
    --shadow-sm: 0 2px 8px rgba(148, 163, 184, 0.15);
    --shadow-md: 0 8px 24px rgba(148, 163, 184, 0.2);
    --shadow-lg: 0 16px 48px rgba(148, 163, 184, 0.25);
    --shadow-glow: 0 0 20px rgba(0, 198, 255, 0.2);
    
    /* Galaxy Background - "Aurora Day" */
    --galaxy-bg-1: #F0F9FF; /* Sky 50 */
    --galaxy-bg-2: #E0F2FE; /* Sky 100 */
    --galaxy-bg-3: #BAE6FD; /* Sky 200 */
}

/* Light Mode Specific Overrides for Galaxy Effect */
body.light-mode .galaxy-spiral {
    mix-blend-mode: multiply;
    opacity: 0.3;
    filter: blur(40px);
}

body.light-mode .stars-field {
    opacity: 0;
}

body.light-mode .galaxy-core {
    mix-blend-mode: overlay;
    opacity: 0.6;
    background: linear-gradient(to bottom,
        rgba(0, 217, 255, 0.8) 0%,
        rgba(124, 58, 237, 0.6) 40%,
        transparent 100%
    );
}

body.light-mode .galaxy-dust {
    mix-blend-mode: multiply;
    opacity: 0.2;
}

/* ========================================
   2. BASE STYLES
   ======================================== */

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
}

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

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

/* ========================================
   3. HERO GALAXY SPIRAL SECTION
   ======================================== */

.hero-video-section {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Galaxy Background Container */
.galaxy-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.galaxy-container {
    width: 100%;
    height: 100%;
    position: relative;
    background: radial-gradient(ellipse at center, var(--galaxy-bg-1) 0%, var(--galaxy-bg-2) 50%, var(--galaxy-bg-3) 100%);
    overflow: hidden;
}

/* Campo de estrelas */
.stars-field {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, white, transparent),
        radial-gradient(2px 2px at 90% 60%, white, transparent),
        radial-gradient(1px 1px at 33% 80%, white, transparent),
        radial-gradient(1px 1px at 75% 25%, white, transparent);
    background-size: 200% 200%;
    background-position: 0% 0%, 40% 60%, 50% 50%, 80% 10%, 90% 60%, 33% 80%, 75% 25%;
    animation: twinkle 3s ease-in-out infinite alternate;
    opacity: 0.8;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Núcleo da galáxia (raio vertical central) */
.galaxy-core {
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 180px;
    height: 120%;
    background: linear-gradient(to bottom,
        rgba(255, 255, 255, 1) 0%,
        rgba(0, 198, 255, 0.9) 20%,
        rgba(0, 114, 255, 0.6) 40%,
        rgba(0, 12, 64, 0.3) 60%,
        transparent 100%
    );
    filter: blur(35px);
    animation: beamPulse 3s ease-in-out infinite;
    z-index: 10;
}

@keyframes beamPulse {
    0%, 100% {
        opacity: 0.8;
        transform: translateX(-50%) scaleY(1);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scaleY(1.05);
    }
}

/* Espirais da galáxia */
.galaxy-spiral {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    opacity: 0.6;
    mix-blend-mode: screen;
}

.spiral-1 {
    width: 800px;
    height: 300px;
    background: radial-gradient(ellipse at center,
        rgba(0, 198, 255, 0.5) 0%,
        rgba(0, 114, 255, 0.4) 30%,
        rgba(0, 12, 64, 0.25) 50%,
        transparent 70%
    );
    transform: translate(-50%, -50%) rotate(-30deg);
    animation: spiralRotate1 40s linear infinite;
    filter: blur(20px);
}

.spiral-2 {
    width: 900px;
    height: 350px;
    background: radial-gradient(ellipse at center,
        rgba(0, 114, 255, 0.4) 0%,
        rgba(0, 198, 255, 0.4) 30%,
        rgba(0, 12, 64, 0.25) 50%,
        transparent 70%
    );
    transform: translate(-50%, -50%) rotate(30deg);
    animation: spiralRotate2 45s linear infinite;
    filter: blur(25px);
}

.spiral-3 {
    width: 1000px;
    height: 400px;
    background: radial-gradient(ellipse at center,
        rgba(0, 12, 64, 0.5) 0%,
        rgba(0, 114, 255, 0.3) 40%,
        transparent 60%
    );
    transform: translate(-50%, -50%) rotate(90deg);
    animation: spiralRotate3 50s linear infinite;
    filter: blur(30px);
}

@keyframes spiralRotate1 {
    from { transform: translate(-50%, -50%) rotate(-30deg); }
    to { transform: translate(-50%, -50%) rotate(330deg); }
}

@keyframes spiralRotate2 {
    from { transform: translate(-50%, -50%) rotate(30deg); }
    to { transform: translate(-50%, -50%) rotate(390deg); }
}

@keyframes spiralRotate3 {
    from { transform: translate(-50%, -50%) rotate(90deg); }
    to { transform: translate(-50%, -50%) rotate(450deg); }
}

/* Poeira galáctica */
.galaxy-dust {
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse 40% 20% at 30% 50%, rgba(255, 165, 0, 0.2), transparent),
        radial-gradient(ellipse 40% 20% at 70% 50%, rgba(0, 217, 255, 0.2), transparent),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.15), transparent 60%);
    mix-blend-mode: screen;
    animation: dustFloat 30s ease-in-out infinite;
}

@keyframes dustFloat {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.1) rotate(5deg);
        opacity: 0.8;
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ========================================
   4. PREMIUM NAVIGATION
   ======================================== */

.premium-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--space-md) var(--space-lg);
    background: rgba(10, 10, 10, 0);
    backdrop-filter: blur(0px);
    transition: background var(--transition-base), backdrop-filter var(--transition-base);
}

.premium-nav.scrolled {
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

/* Light Mode Navbar Override */
body.light-mode .premium-nav.scrolled {
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    transition: color var(--transition-base);
}

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

.nav-menu {
    display: flex;
    gap: var(--space-xl);
    list-style: none;
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width var(--transition-base);
}

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

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

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-right: var(--space-md);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-accent-primary);
}

body.light-mode .theme-toggle {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
}

body.light-mode .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.1);
    border-color: var(--color-accent-primary);
}

.theme-toggle svg {
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.theme-toggle:hover svg {
    color: var(--color-accent-primary);
}

.sun-icon {
    display: block;
}

.moon-icon {
    display: none;
}

body.light-mode .sun-icon {
    display: none;
}

body.light-mode .moon-icon {
    display: block;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* ========================================
   5. HERO TEXT & CONTENT
   ======================================== */

.hero-text-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-3xl) 0;
}

.hero-text {
    max-width: 900px;
    animation: heroFadeUp 1s ease 0.3s both;
}

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

.hero-intro {
    font-size: var(--font-size-4xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-size: var(--font-size-8xl);
    font-weight: 400;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
    line-height: 1.1;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-medium {
    font-size: 2.5rem;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-xl);
    max-width: 600px;
}

/* ========================================
   6. BUTTONS & CTAs
   ======================================== */

.hero-ctas {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.btn-primary-glow,
.btn-secondary-glow,
.btn-test-deep-ocean,
.btn-test-electric-blue {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary-glow {
    background: var(--gradient-accent);
    background-origin: border-box;
    background-repeat: no-repeat;
    color: var(--color-text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary-glow:hover {
    box-shadow: var(--shadow-glow-hover);
    transform: translateY(-2px);
}

.btn-test-deep-ocean {
    background: var(--gradient-deep-ocean);
    background-origin: border-box;
    background-repeat: no-repeat;
    color: #ffffff;
    box-shadow: 0 0 32px rgba(0, 114, 255, 0.3);
}
.btn-test-deep-ocean:hover {
    box-shadow: 0 0 48px rgba(0, 114, 255, 0.5);
    transform: translateY(-2px);
}

.btn-test-electric-blue {
    background: var(--gradient-electric-blue);
    background-origin: border-box;
    background-repeat: no-repeat;
    color: #ffffff;
    box-shadow: 0 0 32px rgba(33, 82, 255, 0.3);
}
.btn-test-electric-blue:hover {
    box-shadow: 0 0 48px rgba(33, 82, 255, 0.5);
    transform: translateY(-2px);
}

.btn-secondary-glow {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.btn-secondary-glow:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-accent-primary);
}

/* ========================================
   7. STATS CARDS (GLASSMORPHISM) - REMOVED
   ======================================== */

/* Stats cards removed to match original layout */

/* ========================================
   8. SCROLL INDICATOR
   ======================================== */

.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--color-accent-primary));
}

/* ========================================
   9. SECTION STYLES
   ======================================== */

.work-section,
.content-section,
.contact-section {
    padding: var(--space-3xl) var(--space-lg);
    background: var(--color-bg-primary);
}

.section-container {
    max-width: 1440px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.section-description {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   10. PROJECTS GRID
   ======================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-xl);
}

.project-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    display: block;
    margin: 0;
    padding: 0;
    transform: scale(1.05);
}

.project-card:hover .project-image img {
    transform: scale(1.08);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.6) 100%);
}

.project-content {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.project-tag {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 217, 255, 0.1);
    color: var(--color-accent-primary);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0, 217, 255, 0.2);
}

.project-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.project-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
    flex: 1;
}

.project-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-accent-primary);
    transition: gap var(--transition-base);
}

.project-card:hover .project-link {
    gap: var(--space-md);
}

/* ========================================
   11. CONTENT GRID
   ======================================== */

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

.content-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.content-card:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.content-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 217, 255, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    color: var(--color-accent-primary);
}

.content-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.content-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
    flex: 1;
}

.content-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-accent-primary);
    transition: gap var(--transition-base);
}

.content-card:hover .content-link {
    gap: var(--space-md);
}

/* ========================================
   12. CONTACT SECTION
   ======================================== */

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.contact-text {
    max-width: 600px;
}

.contact-description {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-xl);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.contact-link:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
    transform: translateX(8px);
}

.contact-link svg {
    color: var(--color-accent-primary);
}

.contact-visual {
    position: relative;
    height: 500px;
}

.contact-decoration {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 198, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.8;
    }
}

.contact-visual {
    /* Garante que a foto e o brilho fiquem centralizados */
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.contact-profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%; /* Circular */
    object-fit: cover;
    border: 2px solid rgba(0, 198, 255, 0.5); /* Borda sutil na cor de destaque */
    box-shadow: 0 0 40px rgba(0, 198, 255, 0.2); /* Glow externo */
    z-index: 2; /* Fica acima da animação de pulso */
    transition: all var(--transition-base);
    filter: grayscale(20%); /* Um pouco desaturado para combinar com o dark mode */
}

.contact-profile-img:hover {
    transform: scale(1.05);
    filter: grayscale(0%);
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 60px rgba(0, 114, 255, 0.4); /* Glow roxo no hover */
}

/* Ajuste a animação existente para ficar atrás da foto */
.contact-decoration {
    /* ...existing code... */
    z-index: 1;
    width: 450px; /* Um pouco maior que a foto */
    height: 450px;
}

/* Ajuste para Light Mode */
body.light-mode .contact-profile-img {
    border-color: var(--color-accent-secondary);
    box-shadow: 0 0 40px rgba(124, 58, 237, 0.2);
}

/* ========================================
   13. FOOTER
   ======================================== */

.premium-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.footer-container {
    max-width: 1440px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.footer-brand .footer-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
}

.footer-links a {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ========================================
   14. RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1200px) {
    :root {
        --font-size-8xl: 5rem;
        --font-size-6xl: 3rem;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

@media (max-width: 968px) {
    :root {
        --font-size-8xl: 4rem;
        --font-size-6xl: 2.5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: rgba(20, 20, 20, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-3xl) var(--space-xl);
        gap: var(--space-lg);
        transition: right var(--transition-base);
        border-left: 1px solid var(--color-border);
    }

    body.light-mode .nav-menu {
        background: rgba(255, 255, 255, 0.98);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-visual {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-8xl: 3rem;
        --font-size-6xl: 2rem;
        --space-3xl: 3rem;
    }
    
    .hero-video {
        display: none;
    }
    
    .hero-video-section {
        background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    }
    
    .hero-ctas {
        flex-direction: column;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-primary-glow,
    .btn-secondary-glow {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-8xl: 2.5rem;
        --font-size-6xl: 1.75rem;
        --space-lg: 1rem;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-title-medium {
        font-size: 2rem;
    }
}

/* Light Mode Button Overrides */
body.light-mode .btn-primary-glow {
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(255, 85, 0, 0.4);
}

body.light-mode .btn-secondary-glow {
    background: rgba(15, 23, 42, 0.05);
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

body.light-mode .btn-secondary-glow:hover {
    background: rgba(15, 23, 42, 0.1);
    border-color: var(--color-accent-primary);
}

/* ========================================
   15. ANIMATIONS & UTILITIES
   ======================================== */

.fade-in {
    animation: fadeIn 0.25s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-left {
    animation: slideInLeft 0.6s ease forwards;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Selection */
::selection {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-primary);
}

/* Case Study Styles */
.case-study-hero {
    padding: 8rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.case-study-hero-content .tags {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.case-study-hero-content .tag {
    color: var(--color-accent-primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.case-study-hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: var(--color-text-primary);
}

.case-study-hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.case-study-hero-image {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
}

.case-study-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.case-study-section {
    padding: 4rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.case-study-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.case-study-text h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--color-text-primary);
}

.case-study-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    margin: 3rem 0;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgba(255,255,255,0.1);
    z-index: 0;
}

.process-step {
    background: var(--color-bg-secondary);
    padding: 1rem 2rem;
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.1);
    z-index: 1;
    font-weight: 600;
    color: var(--color-text-primary);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.result-card {
    background: rgba(255,255,255,0.03);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
}

.result-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent-primary);
    margin-bottom: 0.5rem;
}

.solution-images {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

.solution-images img {
    width: 100%;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.1);
}

@media (max-width: 768px) {
    .case-study-hero, .case-study-grid, .results-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .process-steps {
        flex-direction: column;
        gap: 1rem;
    }
    .process-steps::before {
        display: none;
    }
}

/* ========================================
   CHRISTMAS MODE
   ======================================== */

body.christmas-mode {
    /* Christmas Palette */
    --color-accent-primary: #C41E3A; /* Christmas Red */
    --color-accent-secondary: #0F8558; /* Christmas Green */
    --color-accent-gold: #FFD700; /* Gold */
    
    /* Red/Green Gradient */
    --gradient-accent: linear-gradient(270deg, #0F8558 0%, #C41E3A 100%);
    
    /* Gold Glow */
    --shadow-glow: 0 0 32px rgba(255, 215, 0, 0.3);
    --shadow-glow-hover: 0 0 48px rgba(255, 215, 0, 0.5);
    
    /* Special Cursor (Star) */
    cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="%23FFD700" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2"></polygon></svg>') 12 12, auto;
}

/* Golden Stars in Galaxy */
body.christmas-mode .galaxy-spiral {
    filter: sepia(100%) saturate(300%) hue-rotate(350deg); /* Gold/Reddish tint */
}

/* Blinking Lights Animation */
body.christmas-mode .btn-primary-glow {
    animation: christmas-blink 3s infinite alternate;
}

/* Ensure project cards keep their fade-in animation while blinking */
body.christmas-mode .project-card.fade-in {
    animation: fadeIn 0.25s ease forwards, christmas-blink 3s infinite alternate;
}

@keyframes christmas-blink {
    0% { box-shadow: 0 0 15px #C41E3A; border-color: #C41E3A; }
    50% { box-shadow: 0 0 25px #FFD700; border-color: #FFD700; }
    100% { box-shadow: 0 0 15px #0F8558; border-color: #0F8558; }
}

/* Snow Effect */
.snowflake {
    position: fixed;
    top: -10vh;
    color: #FFF;
    font-size: 1.5em;
    font-family: Arial, sans-serif;
    text-shadow: 0 0 5px #000;
    z-index: 9999;
    user-select: none;
    pointer-events: none;
    animation-name: snowflakes-fall, snowflakes-shake;
    animation-duration: 10s, 3s;
    animation-timing-function: linear, ease-in-out;
    animation-iteration-count: infinite, infinite;
    opacity: 0.8;
}

@keyframes snowflakes-fall {
    0% { top: -10vh; }
    100% { top: 100vh; }
}

@keyframes snowflakes-shake {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(80px); }
}

/* Christmas Toggle Button */
#christmas-toggle {
    font-size: 1.2rem;
    line-height: 1;
}