/* CSS DESIGN SYSTEM - ATRIUM SOLUÇÕES */

/* Variáveis de Cores e Estilos */
:root {
    --bg-dark: #070b15;
    --bg-darker: #04070e;
    --bg-card: rgba(13, 20, 38, 0.65);
    --bg-card-hover: rgba(20, 30, 58, 0.85);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(0, 242, 254, 0.3);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-cyan: #00f2fe;
    --accent-purple: #9c27b0;
    --accent-blue: #4facfe;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    
    --gradient-primary: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
    --gradient-purple: linear-gradient(135deg, #7f00ff 0%, #e100ff 100%);
    --gradient-glow: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, rgba(7, 11, 21, 0) 70%);
    
    --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    
    --shadow-glow: 0 0 20px rgba(0, 242, 254, 0.25);
    --shadow-glow-purple: 0 0 20px rgba(156, 39, 176, 0.25);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
}

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

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Canvas de Fundo */
#laserCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    opacity: 0.4;
}

/* Scrollbar Estilizada */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan);
    box-shadow: var(--shadow-glow);
}

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

.max-w-md {
    max-width: 760px;
}

.section {
    padding: 6rem 0;
    position: relative;
    z-index: 1;
}

.dark-bg {
    background-color: var(--bg-darker);
}

.text-center {
    text-align: center;
}

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

.text-green {
    color: var(--accent-green);
}

.green-text {
    color: var(--accent-green) !important;
}

.font-sm {
    font-size: 0.875rem !important;
}

.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.hidden { display: none !important; }

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-title);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 242, 254, 0.5);
    opacity: 0.95;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.btn-accent {
    background: var(--gradient-purple);
    color: #fff;
    box-shadow: var(--shadow-glow-purple);
}
.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(156, 39, 176, 0.5);
    opacity: 0.95;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}
.btn-md {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
}
.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}
.btn-block {
    width: 100%;
}

/* Glassmorphism */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    border-radius: var(--radius-md);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.2);
    color: var(--accent-cyan);
    padding: 0.35rem 1rem;
    border-radius: 100px;
    font-size: 0.825rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.badge-purple {
    background: rgba(156, 39, 176, 0.1);
    border-color: rgba(156, 39, 176, 0.2);
    color: #db78f2;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background-color: currentColor;
    border-radius: 50%;
    display: inline-block;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.6; }
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(7, 11, 21, 0.75);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}
.logo-icon {
    font-size: 1.6rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.logo-text span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-title);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}
.nav-link:hover {
    color: var(--text-primary);
}
.nav-link:hover::after {
    width: 100%;
}

.nav-btn-mobile {
    display: none;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 110;
}
.mobile-menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    padding-top: 10rem;
    padding-bottom: 6rem;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

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

.hero-title {
    font-family: var(--font-title);
    font-size: 3.5rem;
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}
.hero-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}
.hero-title span::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(0, 242, 254, 0.15);
    z-index: -1;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 1.25rem;
    margin-bottom: 3.5rem;
    width: 100%;
}

.hero-metrics {
    display: flex;
    gap: 3.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    width: 100%;
}

.metric-item {
    display: flex;
    flex-direction: column;
}
.metric-num {
    font-family: var(--font-title);
    font-size: 2.25rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}
.metric-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-visual {
    position: relative;
}

.image-container-glowing {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition-normal);
}
.image-container-glowing:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.02);
    border-color: rgba(0, 242, 254, 0.4);
}

.hero-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.glow-effect {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, transparent 60%);
    pointer-events: none;
    mix-blend-mode: screen;
}

/* Sections Header */
.section-header {
    margin-bottom: 4.5rem;
}
.section-title {
    font-family: var(--font-title);
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}
.section-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Solutions Grid */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.solution-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 3rem 2.25rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: var(--border-highlight);
    box-shadow: var(--shadow-glow);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
}
.solution-card:hover .card-glow {
    opacity: 1;
}

.card-icon {
    font-size: 2.25rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
    width: fit-content;
}

.card-title {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.card-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.5rem;
}
.card-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Tech Graphic (CD Wave Visual) */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tech-graphic {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    position: relative;
    overflow: hidden;
}
.tech-graphic::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(156, 39, 176, 0.15) 0%, transparent 70%);
    top: -20px;
    left: -20px;
}

.wave-container {
    width: 100%;
}

.laser-wave-svg {
    width: 100%;
    height: auto;
}

.wave-clean {
    fill: none;
    stroke: var(--accent-cyan);
    stroke-width: 3;
    stroke-linecap: round;
    filter: drop-shadow(0 0 8px rgba(0, 242, 254, 0.8));
}

.wave-dispersed {
    fill: none;
    stroke: var(--accent-purple);
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-dasharray: 4 2;
    filter: drop-shadow(0 0 6px rgba(156, 39, 176, 0.6));
    animation: dash 20s linear infinite;
}

@keyframes dash {
    to {
        stroke-dashoffset: -1000;
    }
}

.wave-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.label-clean {
    color: var(--accent-cyan);
    font-weight: 600;
}
.label-dispersed {
    color: #db78f2;
    font-weight: 600;
}

.info-content .section-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 2.5rem;
}

.feature-item {
    display: flex;
    gap: 1.25rem;
    margin-bottom: 2rem;
}
.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--accent-cyan);
    box-shadow: inset 0 0 10px rgba(0, 242, 254, 0.05);
}
.feature-desc h4 {
    font-family: var(--font-title);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}
.feature-desc p {
    color: var(--text-secondary);
    font-size: 0.925rem;
}

/* DWDM Diagram styling */
.dwdm-diagram {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.diagram-mux-demux {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    position: relative;
    padding: 2rem 0;
}

.mux-block, .demux-block {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    width: 80px;
    height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 0.75rem;
    box-shadow: inset 0 0 15px rgba(255,255,255,0.02);
}

.mux-block i, .demux-block i {
    font-size: 1.5rem;
    color: var(--accent-cyan);
}

.fiber-line {
    flex-grow: 1;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan) 0%, var(--accent-purple) 50%, var(--accent-blue) 100%);
    margin: 0 1.5rem;
    position: relative;
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.8);
}

.laser-pulse {
    position: absolute;
    width: 12px;
    height: 4px;
    background: #fff;
    border-radius: 50%;
    top: 0;
    left: 0;
    box-shadow: 0 0 8px #fff;
    animation: flowPulse 2s linear infinite;
}

.pulse-2 {
    animation-delay: 0.6s;
}

.pulse-3 {
    animation-delay: 1.2s;
}

@keyframes flowPulse {
    0% { left: 0%; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { left: 100%; opacity: 0; }
}

.diagram-description {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.diagram-description i {
    color: var(--text-muted);
}

/* Timeline Steps */
.timeline-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1.5rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    transition: var(--transition-fast);
}
.step-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(0, 242, 254, 0.2);
}

.step-num {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-cyan);
    line-height: 1;
}

.step-text h5 {
    font-family: var(--font-title);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.step-text p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Simulator Section styling */
.simulator-section {
    position: relative;
}

.simulator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 3rem;
    padding: 3.5rem;
    margin-top: 2rem;
}

.sim-panel-title {
    font-family: var(--font-title);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 0.75rem;
}

.sim-controls {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.control-group label {
    font-size: 0.925rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
}

.highlight-val {
    color: var(--accent-cyan);
    font-family: var(--font-title);
    font-weight: 700;
}

/* Slider Customization */
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    transition: var(--transition-fast);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-cyan);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.8);
    transition: var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider-ticks {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Capacity Selection Buttons */
.capacity-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.cap-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.cap-btn:hover {
    border-color: rgba(0, 242, 254, 0.3);
    color: var(--text-primary);
}

.cap-btn.active {
    background: rgba(0, 242, 254, 0.08);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: inset 0 0 10px rgba(0, 242, 254, 0.05);
}

/* Select Box */
.sim-select {
    background: rgba(7, 11, 21, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.875rem;
    outline: none;
    cursor: pointer;
}
.sim-select:focus {
    border-color: var(--accent-cyan);
}

.sim-select option {
    background: var(--bg-dark);
}

/* Visualizer Side of Simulator */
.sim-visualizer {
    display: flex;
    flex-direction: column;
}

.link-diagram-visual {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.node-element {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    width: 95px;
    position: relative;
    z-index: 2;
    transition: var(--transition-normal);
}
.node-element i {
    font-size: 1.25rem;
    color: var(--accent-cyan);
}
.node-name {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    text-align: center;
}
.node-status {
    font-size: 0.55rem;
    font-weight: 800;
    text-transform: uppercase;
}
.node-sub {
    font-size: 0.55rem;
    color: var(--text-secondary);
}

.node-element.hidden {
    display: none !important;
}

.node-line-connect {
    flex-grow: 1;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    position: relative;
}
.node-line-connect.active {
    background: var(--accent-cyan);
    box-shadow: 0 0 6px rgba(0, 242, 254, 0.4);
}
.node-line-connect.hidden {
    display: none !important;
}

.fiber-segment {
    min-width: 50px;
    display: flex;
    justify-content: center;
}

.fiber-distance-tag {
    position: absolute;
    top: -18px;
    font-size: 0.65rem;
    font-family: var(--font-title);
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-dark);
    padding: 1px 6px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    white-space: nowrap;
}

.fiber-glow-pulse {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #fff;
    box-shadow: 0 0 8px #fff;
    left: 0;
    top: -2px;
    animation: flowPulse 2s linear infinite;
}

/* Results metrics in Simulator */
.sim-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.result-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
    display: flex;
    flex-direction: column;
}
.result-label {
    font-size: 0.725rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}
.result-val {
    font-family: var(--font-title);
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary);
}

/* Form Contact Section */
.contact-section {
    position: relative;
    background: var(--bg-darker);
}

.contact-card {
    padding: 3.5rem;
    border-radius: var(--radius-lg);
    margin-top: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

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

.form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-top: 0.5rem;
}
.form-group-checkbox input[type="checkbox"] {
    margin-top: 0.25rem;
    cursor: pointer;
    accent-color: var(--accent-cyan);
}
.form-group-checkbox label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.form-group label i {
    color: var(--accent-cyan);
    font-size: 0.95rem;
}

.form-control {
    background: rgba(7, 11, 21, 0.8);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.875rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* Spinner and Buttons logic */
.btn-spinner {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Form success card styling */
.form-success-message {
    text-align: center;
    padding: 2rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.success-icon {
    font-size: 4rem;
    color: var(--accent-green);
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 10px rgba(16, 185, 129, 0.3));
}

.form-success-message h3 {
    font-family: var(--font-title);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.form-success-message p {
    color: var(--text-secondary);
    max-width: 480px;
    margin-bottom: 1.5rem;
}

/* Footer styling */
.footer {
    background-color: #03050a;
    border-top: 1px solid var(--border-color);
    padding: 5rem 0 2rem;
    z-index: 10;
    position: relative;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: #000;
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.footer-links-group h4 {
    font-family: var(--font-title);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-links-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links-group ul a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-links-group ul a:hover {
    color: var(--accent-cyan);
    padding-left: 4px;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-list li i {
    color: var(--accent-cyan);
    font-size: 1rem;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
}

.footer-bottom-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* RESPONSIVIDADE (MEDIA QUERIES) */

@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    .hero-content {
        align-items: center;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-metrics {
        justify-content: center;
    }
    .hero-visual {
        max-width: 600px;
        margin: 0 auto;
    }
    .image-container-glowing {
        transform: none;
    }
    .image-container-glowing:hover {
        transform: scale(1.02);
    }
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .tech-graphic {
        max-width: 600px;
        margin: 0 auto;
    }
    .dwdm-diagram {
        max-width: 600px;
        margin: 0 auto;
    }
    .simulator-wrapper {
        grid-template-columns: 1fr;
        padding: 2.5rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 70px;
    }
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(7, 11, 21, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        transition: var(--transition-normal);
        z-index: 99;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-btn-mobile {
        display: inline-flex;
        background: var(--gradient-primary);
        color: #000;
        font-family: var(--font-title);
        font-weight: 600;
        padding: 0.75rem 2.5rem;
        border-radius: var(--radius-sm);
        text-decoration: none;
    }
    
    /* Hamburger menu toggle states */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .nav-actions .btn {
        display: none;
    }
    
    .hero {
        padding-top: 8rem;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-actions {
        flex-direction: column;
        gap: 1rem;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .contact-card {
        padding: 2rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .footer-bottom-flex {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    .reverse-on-mobile .info-content {
        order: 2;
    }
    .reverse-on-mobile .info-visual {
        order: 1;
    }
    .link-diagram-visual {
        flex-direction: column;
        gap: 1rem;
        padding: 2rem 1rem;
    }
    .node-line-connect {
        width: 2px;
        height: 25px;
        flex-grow: 0;
    }
    .fiber-segment {
        width: 2px;
        height: 40px;
    }
    .fiber-distance-tag {
        top: 50%;
        left: 15px;
        transform: translateY(-50%);
    }
    .fiber-glow-pulse {
        width: 6px;
        height: 6px;
        left: -2px;
        top: 0;
        animation: flowPulseY 2s linear infinite;
    }
    .sim-results {
        grid-template-columns: 1fr;
    }
}

@keyframes flowPulseY {
    0% { top: 0%; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}