/* ============================================
   GO SPRK DESIGN SYSTEM
   Complete CSS Framework with Design Tokens
   Version: 1.0.0
   ============================================ */

/* ============================================
   PART 1: CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================ */

:root {
  /* ===== COLORS ===== */
  /* Background Colors */
  --gosprk-color-primary-bg: #0A0A0A;
  --gosprk-color-secondary-bg: #1A1A1A;

  /* Accent Colors (SIGNATURE CHARTREUSE) */
  --gosprk-color-accent: #A3CF53;
  --gosprk-color-accent-hover: #B8E066;
  --gosprk-color-accent-pressed: #8FB844;

  /* Text Colors */
  --gosprk-color-text-primary: #FFFFFF;
  --gosprk-color-text-secondary: #767676;
  --gosprk-color-text-tertiary: #4A4A4A;

  /* ===== TYPOGRAPHY ===== */
  /* Font Families */
  --gosprk-font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;

  /* Font Sizes */
  --gosprk-font-size-5xl: 64px;
  --gosprk-font-size-4xl: 48px;
  --gosprk-font-size-3xl: 40px;
  --gosprk-font-size-2xl: 32px;
  --gosprk-font-size-xl: 24px;
  --gosprk-font-size-base: 16px;
  --gosprk-font-size-sm: 14px;
  --gosprk-font-size-xs: 12px;

  /* Font Weights */
  --gosprk-font-weight-bold: 700;
  --gosprk-font-weight-semibold: 600;
  --gosprk-font-weight-medium: 500;
  --gosprk-font-weight-regular: 400;

  /* Line Heights */
  --gosprk-line-height-tight: 1.2;
  --gosprk-line-height-normal: 1.5;
  --gosprk-line-height-relaxed: 1.75;

  /* ===== SPACING (MODULAR 4px) ===== */
  --gosprk-spacing-1: 4px;
  --gosprk-spacing-2: 8px;
  --gosprk-spacing-3: 12px;
  --gosprk-spacing-4: 16px;
  --gosprk-spacing-6: 24px;
  --gosprk-spacing-8: 32px;
  --gosprk-spacing-10: 40px;
  --gosprk-spacing-12: 48px;
  --gosprk-spacing-16: 64px;
  --gosprk-spacing-20: 80px;
  --gosprk-spacing-24: 96px;
  --gosprk-spacing-32: 128px;

  /* ===== BORDER RADIUS ===== */
  --gosprk-radius-xs: 4px;
  --gosprk-radius-sm: 8px;
  --gosprk-radius-md: 12px;
  --gosprk-radius-lg: 16px;
  --gosprk-radius-xl: 24px;
  --gosprk-radius-full: 9999px;

  /* ===== SHADOWS ===== */
  --gosprk-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --gosprk-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --gosprk-shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --gosprk-shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --gosprk-shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
  --gosprk-shadow-2xl: 0 20px 40px rgba(0, 0, 0, 0.3);

  /* Accent Shadows */
  --gosprk-shadow-accent-sm: 0 2px 8px rgba(163, 207, 83, 0.2);
  --gosprk-shadow-accent-md: 0 4px 16px rgba(163, 207, 83, 0.3);
  --gosprk-shadow-accent-lg: 0 8px 24px rgba(163, 207, 83, 0.4);

  /* ===== ANIMATION ===== */
  --gosprk-duration-fast: 200ms;
  --gosprk-duration-normal: 300ms;
  --gosprk-duration-slow: 400ms;
  --gosprk-duration-slower: 600ms;

  /* Easing Functions */
  --gosprk-ease-out: cubic-bezier(0, 0, 0.2, 1);
  --gosprk-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --gosprk-ease-elastic: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Combined Transitions */
  --gosprk-transition-fast: all var(--gosprk-duration-fast) var(--gosprk-ease-out);
  --gosprk-transition-normal: all var(--gosprk-duration-normal) var(--gosprk-ease-in-out);
  --gosprk-transition-slow: all var(--gosprk-duration-slow) var(--gosprk-ease-in-out);

  /* ===== BREAKPOINTS ===== */
  --gosprk-breakpoint-xs: 360px;
  --gosprk-breakpoint-sm: 480px;
  --gosprk-breakpoint-md: 768px;
  --gosprk-breakpoint-lg: 1024px;
  --gosprk-breakpoint-xl: 1440px;

  /* ===== LAYOUT ===== */
  --gosprk-container-max-width: 1440px;
  --gosprk-container-padding: var(--gosprk-spacing-6);

  /* Z-Index Layers */
  --gosprk-z-dropdown: 1000;
  --gosprk-z-sticky: 1020;
  --gosprk-z-fixed: 1030;
  --gosprk-z-modal-backdrop: 1040;
  --gosprk-z-modal: 1050;
  --gosprk-z-popover: 1060;
  --gosprk-z-tooltip: 1070;
}

/* ============================================
   PART 2: RESET & BASE STYLES
   ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--gosprk-font-primary);
  font-size: var(--gosprk-font-size-base);
  font-weight: var(--gosprk-font-weight-regular);
  line-height: var(--gosprk-line-height-normal);
  color: var(--gosprk-color-text-primary);
  background-color: var(--gosprk-color-primary-bg);
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================
   PART 3: TYPOGRAPHY CLASSES
   ============================================ */

.gosprk-h1 {
  font-size: var(--gosprk-font-size-5xl);
  font-weight: var(--gosprk-font-weight-bold);
  line-height: var(--gosprk-line-height-tight);
  color: var(--gosprk-color-text-primary);
  margin-bottom: var(--gosprk-spacing-6);
}

.gosprk-h2 {
  font-size: var(--gosprk-font-size-4xl);
  font-weight: var(--gosprk-font-weight-bold);
  line-height: var(--gosprk-line-height-tight);
  color: var(--gosprk-color-text-primary);
  margin-bottom: var(--gosprk-spacing-6);
}

.gosprk-h3 {
  font-size: var(--gosprk-font-size-3xl);
  font-weight: var(--gosprk-font-weight-semibold);
  line-height: var(--gosprk-line-height-tight);
  color: var(--gosprk-color-text-primary);
  margin-bottom: var(--gosprk-spacing-4);
}

.gosprk-h4 {
  font-size: var(--gosprk-font-size-2xl);
  font-weight: var(--gosprk-font-weight-semibold);
  line-height: var(--gosprk-line-height-tight);
  color: var(--gosprk-color-text-primary);
  margin-bottom: var(--gosprk-spacing-4);
}

.gosprk-h5 {
  font-size: var(--gosprk-font-size-xl);
  font-weight: var(--gosprk-font-weight-semibold);
  line-height: var(--gosprk-line-height-normal);
  color: var(--gosprk-color-text-primary);
  margin-bottom: var(--gosprk-spacing-3);
}

.gosprk-h6 {
  font-size: var(--gosprk-font-size-base);
  font-weight: var(--gosprk-font-weight-semibold);
  line-height: var(--gosprk-line-height-normal);
  color: var(--gosprk-color-text-primary);
  margin-bottom: var(--gosprk-spacing-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.gosprk-body {
  font-size: var(--gosprk-font-size-base);
  font-weight: var(--gosprk-font-weight-regular);
  line-height: var(--gosprk-line-height-relaxed);
  color: var(--gosprk-color-text-primary);
}

.gosprk-body-sm {
  font-size: var(--gosprk-font-size-sm);
  font-weight: var(--gosprk-font-weight-regular);
  line-height: var(--gosprk-line-height-normal);
  color: var(--gosprk-color-text-primary);
}

.gosprk-body-xs {
  font-size: var(--gosprk-font-size-xs);
  font-weight: var(--gosprk-font-weight-regular);
  line-height: var(--gosprk-line-height-normal);
  color: var(--gosprk-color-text-primary);
}

/* Text Color Utilities */
.gosprk-text-primary {
  color: var(--gosprk-color-text-primary);
}

.gosprk-text-secondary {
  color: var(--gosprk-color-text-secondary);
}

.gosprk-text-tertiary {
  color: var(--gosprk-color-text-tertiary);
}

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

/* ============================================
   PART 4: LAYOUT COMPONENTS
   ============================================ */

.gosprk-container {
  width: 100%;
  max-width: var(--gosprk-container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gosprk-container-padding);
  padding-right: var(--gosprk-container-padding);
}

.gosprk-section {
  padding: var(--gosprk-spacing-20) 0;
}

.gosprk-section-title {
  text-align: center;
  margin-bottom: var(--gosprk-spacing-16);
}

/* ============================================
   PART 5: BUTTON COMPONENTS
   ============================================ */

/* Primary CTA Button (CHARTREUSE) */
.gosprk-btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gosprk-spacing-2);
  padding: 12px 24px;
  background-color: var(--gosprk-color-accent);
  color: var(--gosprk-color-primary-bg);
  border: none;
  border-radius: var(--gosprk-radius-xl);
  font-size: var(--gosprk-font-size-sm);
  font-weight: var(--gosprk-font-weight-semibold);
  line-height: 1;
  cursor: pointer;
  transition: var(--gosprk-transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.gosprk-btn-cta:hover {
  background-color: var(--gosprk-color-accent-hover);
  box-shadow: var(--gosprk-shadow-lg);
  transform: translateY(-2px);
}

.gosprk-btn-cta:active {
  background-color: var(--gosprk-color-accent-pressed);
  transform: translateY(0);
  box-shadow: var(--gosprk-shadow-md);
}

.gosprk-btn-cta:focus {
  outline: 3px solid rgba(163, 207, 83, 0.3);
  outline-offset: 2px;
}

.gosprk-btn-cta:disabled {
  background-color: var(--gosprk-color-text-tertiary);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Secondary Button (OUTLINE) */
.gosprk-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gosprk-spacing-2);
  padding: 12px 24px;
  background-color: transparent;
  color: var(--gosprk-color-text-primary);
  border: 1px solid var(--gosprk-color-text-primary);
  border-radius: var(--gosprk-radius-xl);
  font-size: var(--gosprk-font-size-sm);
  font-weight: var(--gosprk-font-weight-semibold);
  line-height: 1;
  cursor: pointer;
  transition: var(--gosprk-transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.gosprk-btn-secondary:hover {
  background-color: rgba(163, 207, 83, 0.1);
  border-color: var(--gosprk-color-accent);
  color: var(--gosprk-color-accent);
}

.gosprk-btn-secondary:active {
  background-color: rgba(163, 207, 83, 0.2);
}

.gosprk-btn-secondary:focus {
  outline: 3px solid rgba(163, 207, 83, 0.3);
  outline-offset: 2px;
}

/* Button Sizes */
.gosprk-btn-lg {
  padding: 16px 32px;
  font-size: var(--gosprk-font-size-base);
}

.gosprk-btn-sm {
  padding: 8px 16px;
  font-size: var(--gosprk-font-size-xs);
}

/* Button Full Width */
.gosprk-btn-full {
  width: 100%;
}

/* ============================================
   PART 6: CARD COMPONENT
   ============================================ */

.gosprk-card {
  background-color: var(--gosprk-color-secondary-bg);
  border-left: 4px solid var(--gosprk-color-accent);
  border-radius: var(--gosprk-radius-lg);
  overflow: hidden;
  box-shadow: var(--gosprk-shadow-md);
  transition: var(--gosprk-transition-normal);
}

.gosprk-card:hover {
  box-shadow: var(--gosprk-shadow-xl);
  transform: translateY(-4px);
  border-left-color: var(--gosprk-color-accent-hover);
}

.gosprk-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.gosprk-card-content {
  padding: var(--gosprk-spacing-6);
}

.gosprk-card-content h3 {
  margin-bottom: var(--gosprk-spacing-4);
  color: var(--gosprk-color-text-primary);
}

.gosprk-card-content p {
  margin-bottom: var(--gosprk-spacing-6);
  color: var(--gosprk-color-text-secondary);
}

/* Card Variants */
.gosprk-card-simple {
  border-left: none;
  padding: var(--gosprk-spacing-6);
}

.gosprk-card-hover-accent:hover {
  border-color: var(--gosprk-color-accent);
  box-shadow: var(--gosprk-shadow-accent-md);
}

/* ============================================
   PART 7: FORM COMPONENTS
   ============================================ */

.gosprk-input,
.gosprk-textarea,
.gosprk-select {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--gosprk-color-secondary-bg);
  border: 1px solid var(--gosprk-color-text-secondary);
  border-radius: var(--gosprk-radius-xs);
  color: var(--gosprk-color-text-primary);
  font-size: var(--gosprk-font-size-base);
  font-family: var(--gosprk-font-primary);
  transition: var(--gosprk-transition-fast);
}

.gosprk-input::placeholder,
.gosprk-textarea::placeholder {
  color: var(--gosprk-color-text-tertiary);
}

.gosprk-input:focus,
.gosprk-textarea:focus,
.gosprk-select:focus {
  outline: none;
  border-color: var(--gosprk-color-accent);
  box-shadow: 0 0 0 3px rgba(163, 207, 83, 0.1);
  background-color: var(--gosprk-color-primary-bg);
}

.gosprk-textarea {
  min-height: 120px;
  resize: vertical;
}

.gosprk-label {
  display: block;
  margin-bottom: var(--gosprk-spacing-2);
  font-size: var(--gosprk-font-size-sm);
  font-weight: var(--gosprk-font-weight-medium);
  color: var(--gosprk-color-text-primary);
}

.gosprk-form-group {
  margin-bottom: var(--gosprk-spacing-6);
}

/* ============================================
   PART 8: TAG/BADGE COMPONENT
   ============================================ */

.gosprk-tag {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--gosprk-color-accent);
  color: var(--gosprk-color-primary-bg);
  border-radius: var(--gosprk-radius-xl);
  font-size: var(--gosprk-font-size-xs);
  font-weight: var(--gosprk-font-weight-semibold);
  line-height: 1;
}

.gosprk-tag-outline {
  background-color: transparent;
  border: 1px solid var(--gosprk-color-accent);
  color: var(--gosprk-color-accent);
}

.gosprk-tag-sm {
  padding: 4px 12px;
  font-size: 10px;
}

/* ============================================
   PART 9: HEADER COMPONENT
   ============================================ */

.gosprk-header {
  position: sticky;
  top: 0;
  background-color: var(--gosprk-color-primary-bg);
  border-bottom: 1px solid rgba(118, 118, 118, 0.2);
  z-index: var(--gosprk-z-sticky);
  padding: var(--gosprk-spacing-4) 0;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.gosprk-header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gosprk-spacing-12);
}

.gosprk-logo {
  display: flex;
  align-items: center;
}

.gosprk-logo img {
  height: 40px;
  width: auto;
}

.gosprk-nav {
  display: flex;
  gap: var(--gosprk-spacing-12);
  list-style: none;
  margin: 0;
  padding: 0;
}

.gosprk-nav-link {
  color: var(--gosprk-color-text-primary);
  text-decoration: none;
  font-size: var(--gosprk-font-size-sm);
  font-weight: var(--gosprk-font-weight-medium);
  transition: var(--gosprk-transition-fast);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.gosprk-nav-link:hover,
.gosprk-nav-link.active {
  color: var(--gosprk-color-accent);
  border-bottom-color: var(--gosprk-color-accent);
}

.gosprk-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.gosprk-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--gosprk-color-text-primary);
  transition: var(--gosprk-transition-fast);
  border-radius: 2px;
}

.gosprk-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.gosprk-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   PART 10: HERO SECTION
   ============================================ */

.gosprk-hero {
  background-color: var(--gosprk-color-primary-bg);
  padding: var(--gosprk-spacing-20) 0;
  position: relative;
  overflow: hidden;
}

.gosprk-hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gosprk-spacing-16);
  align-items: center;
}

.gosprk-hero-text h1 {
  margin-bottom: var(--gosprk-spacing-6);
}

.gosprk-hero-text p {
  margin-bottom: var(--gosprk-spacing-12);
  font-size: var(--gosprk-font-size-xl);
}

.gosprk-hero-buttons {
  display: flex;
  gap: var(--gosprk-spacing-4);
  flex-wrap: wrap;
}

.gosprk-hero-visual {
  position: relative;
}

.gosprk-hero-illustration {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 20px rgba(163, 207, 83, 0.2));
}

.gosprk-hero-decoration {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: auto;
}

.gosprk-hero-curve {
  stroke: var(--gosprk-color-accent);
  stroke-width: 3;
  fill: none;
  filter: drop-shadow(0 0 4px rgba(163, 207, 83, 0.3));
}

/* ============================================
   PART 11: TIMELINE COMPONENT
   ============================================ */

.gosprk-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gosprk-spacing-12);
  position: relative;
}

.gosprk-timeline::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--gosprk-color-accent) 0%,
    var(--gosprk-color-accent) 100%);
  z-index: 0;
}

.gosprk-timeline-item {
  position: relative;
  z-index: 1;
  text-align: center;
}

.gosprk-timeline-number {
  width: 48px;
  height: 48px;
  background-color: var(--gosprk-color-accent);
  color: var(--gosprk-color-primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--gosprk-font-weight-bold);
  font-size: 20px;
  margin: 0 auto var(--gosprk-spacing-6);
  position: relative;
  z-index: 2;
  box-shadow: var(--gosprk-shadow-accent-md);
}

.gosprk-timeline-item h3 {
  margin-bottom: var(--gosprk-spacing-4);
}

/* ============================================
   PART 12: FOOTER COMPONENT
   ============================================ */

.gosprk-footer {
  background-color: var(--gosprk-color-primary-bg);
  border-top: 1px solid rgba(118, 118, 118, 0.2);
  padding: var(--gosprk-spacing-16) 0;
  margin-top: var(--gosprk-spacing-20);
}

.gosprk-footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gosprk-spacing-12);
  margin-bottom: var(--gosprk-spacing-16);
  padding-bottom: var(--gosprk-spacing-16);
  border-bottom: 1px solid rgba(118, 118, 118, 0.2);
}

.gosprk-footer-column h4 {
  margin-bottom: var(--gosprk-spacing-6);
  color: var(--gosprk-color-text-primary);
}

.gosprk-footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--gosprk-spacing-4);
}

.gosprk-footer-link {
  color: var(--gosprk-color-text-secondary);
  text-decoration: none;
  font-size: var(--gosprk-font-size-sm);
  transition: var(--gosprk-transition-fast);
}

.gosprk-footer-link:hover {
  color: var(--gosprk-color-accent);
}

.gosprk-footer-newsletter {
  display: flex;
  gap: var(--gosprk-spacing-2);
}

.gosprk-footer-newsletter .gosprk-input {
  flex: 1;
}

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

.gosprk-social-icons {
  display: flex;
  gap: var(--gosprk-spacing-6);
}

.gosprk-social-link {
  color: var(--gosprk-color-text-secondary);
  text-decoration: none;
  transition: var(--gosprk-transition-fast);
}

.gosprk-social-link:hover {
  color: var(--gosprk-color-accent);
}

/* ============================================
   PART 13: UTILITY CLASSES
   ============================================ */

/* Display & Visibility */
.gosprk-hidden {
  display: none;
}

.gosprk-visible {
  display: block;
}

.gosprk-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Flexbox Utilities */
.gosprk-flex {
  display: flex;
}

.gosprk-flex-col {
  flex-direction: column;
}

.gosprk-flex-center {
  justify-content: center;
  align-items: center;
}

.gosprk-flex-between {
  justify-content: space-between;
}

.gosprk-flex-wrap {
  flex-wrap: wrap;
}

.gosprk-gap-1 {
  gap: var(--gosprk-spacing-1);
}

.gosprk-gap-2 {
  gap: var(--gosprk-spacing-2);
}

.gosprk-gap-4 {
  gap: var(--gosprk-spacing-4);
}

.gosprk-gap-6 {
  gap: var(--gosprk-spacing-6);
}

.gosprk-gap-8 {
  gap: var(--gosprk-spacing-8);
}

/* Grid Utilities */
.gosprk-grid {
  display: grid;
}

.gosprk-grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.gosprk-grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.gosprk-grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.gosprk-grid-cols-6 {
  grid-template-columns: repeat(6, 1fr);
}

/* Text Utilities */
.gosprk-text-center {
  text-align: center;
}

.gosprk-text-left {
  text-align: left;
}

.gosprk-text-right {
  text-align: right;
}

.gosprk-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gosprk-line-clamp {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Spacing Utilities */
.gosprk-mt-4 {
  margin-top: var(--gosprk-spacing-4);
}

.gosprk-mt-6 {
  margin-top: var(--gosprk-spacing-6);
}

.gosprk-mt-8 {
  margin-top: var(--gosprk-spacing-8);
}

.gosprk-mb-4 {
  margin-bottom: var(--gosprk-spacing-4);
}

.gosprk-mb-6 {
  margin-bottom: var(--gosprk-spacing-6);
}

.gosprk-mb-8 {
  margin-bottom: var(--gosprk-spacing-8);
}

/* ============================================
   PART 14: RESPONSIVE BREAKPOINTS
   ============================================ */

/* Tablet (768px) */
@media (max-width: 768px) {
  :root {
    --gosprk-container-padding: var(--gosprk-spacing-4);
  }

  /* Typography Adjustments */
  .gosprk-h1 {
    font-size: var(--gosprk-font-size-3xl);
  }

  .gosprk-h2 {
    font-size: var(--gosprk-font-size-2xl);
  }

  .gosprk-h3 {
    font-size: var(--gosprk-font-size-xl);
  }

  /* Header */
  .gosprk-menu-toggle {
    display: flex;
  }

  .gosprk-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--gosprk-color-secondary-bg);
    padding: var(--gosprk-spacing-6);
    gap: var(--gosprk-spacing-4);
    box-shadow: var(--gosprk-shadow-xl);
  }

  .gosprk-nav.active {
    display: flex;
  }

  .gosprk-header-content .gosprk-btn-cta {
    display: none;
  }

  /* Hero */
  .gosprk-hero-content {
    grid-template-columns: 1fr;
  }

  .gosprk-hero-visual {
    display: none;
  }

  .gosprk-hero-text p {
    font-size: var(--gosprk-font-size-base);
  }

  /* Timeline */
  .gosprk-timeline {
    grid-template-columns: 1fr;
    gap: var(--gosprk-spacing-8);
  }

  .gosprk-timeline::before {
    left: 24px;
    top: 0;
    bottom: 0;
    width: 3px;
    height: auto;
    right: auto;
    background: linear-gradient(180deg,
      var(--gosprk-color-accent) 0%,
      var(--gosprk-color-accent) 100%);
  }

  .gosprk-timeline-item {
    text-align: left;
    padding-left: var(--gosprk-spacing-16);
  }

  .gosprk-timeline-number {
    margin-left: 0;
  }

  /* Grid Utilities */
  .gosprk-grid-cols-3,
  .gosprk-grid-cols-4,
  .gosprk-grid-cols-6 {
    grid-template-columns: 1fr;
  }

  .gosprk-hide-mobile {
    display: none;
  }

  /* Footer */
  .gosprk-footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gosprk-spacing-8);
  }

  .gosprk-footer-bottom {
    flex-direction: column;
    gap: var(--gosprk-spacing-6);
    text-align: center;
  }
}

/* Mobile Large (480px) */
@media (max-width: 480px) {
  /* Button Full Width on Small Mobile */
  .gosprk-hero-buttons .gosprk-btn-cta,
  .gosprk-hero-buttons .gosprk-btn-secondary {
    width: 100%;
  }

  /* Footer */
  .gosprk-footer-content {
    grid-template-columns: 1fr;
  }

  .gosprk-footer-newsletter {
    flex-direction: column;
  }
}

/* Mobile Small (360px) */
@media (max-width: 360px) {
  .gosprk-h1 {
    font-size: var(--gosprk-font-size-2xl);
  }

  .gosprk-h2 {
    font-size: var(--gosprk-font-size-xl);
  }
}

/* Desktop Large (1024px+) */
@media (min-width: 1024px) {
  .gosprk-timeline {
    grid-template-columns: repeat(4, 1fr);
  }

  .gosprk-timeline::before {
    top: 24px;
    left: 0;
    right: 0;
    width: auto;
    height: 3px;
    bottom: auto;
  }

  .gosprk-timeline-item {
    text-align: center;
    padding-left: 0;
  }

  .gosprk-show-mobile {
    display: none;
  }
}

/* Desktop Extra Large (1440px+) */
@media (min-width: 1440px) {
  .gosprk-hero-content {
    gap: var(--gosprk-spacing-24);
  }
}

/* ============================================
   PART 15: ANIMATIONS
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

.gosprk-fade-in {
  animation: fadeIn var(--gosprk-duration-normal) var(--gosprk-ease-out);
}

.gosprk-fade-in-up {
  animation: fadeInUp var(--gosprk-duration-slow) var(--gosprk-ease-out);
}

.gosprk-slide-in-right {
  animation: slideInRight var(--gosprk-duration-slow) var(--gosprk-ease-out);
}

/* ============================================
   CLIENTS SECTION STYLES
   ============================================ */

.gosprk-clients {
  background: var(--gosprk-color-primary-bg, #0A0A0A);
  padding: 100px 0;
  text-align: center;
}

.gosprk-clients-header {
  margin-bottom: 60px;
}

.gosprk-clients-tag {
  display: inline-block;
  font-size: var(--gosprk-font-size-xs, 12px);
  font-weight: var(--gosprk-font-weight-semibold, 600);
  letter-spacing: 2px;
  color: var(--gosprk-color-accent, #A3CF53);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.gosprk-clients-title {
  font-size: var(--gosprk-font-size-3xl, 40px);
  font-weight: var(--gosprk-font-weight-bold, 700);
  color: var(--gosprk-color-text-primary, #FFFFFF);
  margin: 0;
  line-height: var(--gosprk-line-height-tight, 1.2);
}

.gosprk-clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  justify-items: center;
  align-items: center;
  padding: 0 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.gosprk-client-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  padding: 12px;
  transition: all var(--gosprk-duration-fast, 0.15s) var(--gosprk-ease-out, ease-out);
}

.gosprk-client-logo img {
  max-width: 180px;
  max-height: 90px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%) brightness(1.2);
  opacity: 0.8;
  transition: all var(--gosprk-duration-fast, 0.15s) var(--gosprk-ease-out, ease-out);
  background: rgba(255, 255, 255, 0.08);
  padding: 12px;
  border-radius: 10px;
}

.gosprk-client-logo:hover img {
  filter: grayscale(0%) brightness(1);
  opacity: 1;
  transform: scale(1.08);
  background: rgba(255, 255, 255, 0.15);
}

/* Fallback para logos sem imagem (span) */
.gosprk-client-logo span {
  font-size: var(--gosprk-font-size-xl, 24px);
  font-weight: var(--gosprk-font-weight-semibold, 600);
  color: var(--gosprk-color-text-secondary, #767676);
  transition: color var(--gosprk-duration-fast, 0.15s) var(--gosprk-ease-out, ease-out);
}

.gosprk-client-logo:hover span {
  color: var(--gosprk-color-text-primary, #FFFFFF);
}

/* Responsive */
@media (max-width: 768px) {
  .gosprk-clients {
    padding: 60px 0;
  }

  .gosprk-clients-title {
    font-size: var(--gosprk-font-size-2xl, 32px);
  }

  .gosprk-clients-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 32px;
  }

  .gosprk-client-logo img {
    max-width: 120px;
    max-height: 60px;
  }
}

/* ============================================
   END OF DESIGN SYSTEM
   ============================================ */