:root {
  /* --- Colors --- */
  --color-primary: #6A27B9;
  --color-primary-hover: #5A20A0;
  --color-secondary: #AB37E3;
  --color-secondary-hover: #922FD1;

  --color-bg: #FFFFFF;
  --color-surface: #FAFAFA;
  --color-card-bg: #FFFFFF;

  --color-text-title: #000000;
  --color-text-body: #595959;

  --color-border: #E5E7EB;

  --color-success: #22C55E;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* Neutral Grays */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);

  /* --- Typography --- */
  --font-family-sans: 'Roboto', system-ui, -apple-system, sans-serif;

  /* Fluid Typography for H1-H3 to accommodate sizes like 40-48px */
  --font-size-h1: clamp(2.5rem, 4vw + 1rem, 3rem);
  /* 40px - 48px */
  --font-size-h2: clamp(2rem, 3vw + 1rem, 2.25rem);
  /* 32px - 36px */
  --font-size-h3: clamp(1.5rem, 2vw + 1rem, 1.75rem);
  /* 24px - 28px */

  --font-size-body-large: 1.125rem;
  /* 18px */
  --font-size-body: 1rem;
  /* 16px */
  --font-size-caption: 0.875rem;
  /* 14px */

  --line-height-tight: 1.1;
  --line-height-normal: 1.4;
  --line-height-loose: 1.6;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* --- Spacing System (4px scale) --- */
  --spacing-1: 0.25rem;
  /* 4px */
  --spacing-2: 0.5rem;
  /* 8px */
  --spacing-3: 0.75rem;
  /* 12px */
  --spacing-4: 1rem;
  /* 16px */
  --spacing-6: 1.5rem;
  /* 24px */
  --spacing-8: 2rem;
  /* 32px */
  --spacing-12: 3rem;
  /* 48px */
  --spacing-16: 4rem;
  /* 64px */
  --spacing-20: 5rem;
  /* 80px */
  --spacing-24: 6rem;
  /* 96px */
  --spacing-32: 8rem;
  /* 128px */

  /* --- Layout --- */
  --layout-max-width: 1280px;
  --layout-gutter: var(--spacing-6);
  /* 24px */

  /* --- Border Radius --- */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  /* Pill shape */

  /* --- Elevation (Shadows) --- */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  /* Subtle */
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  /* Default Cards */
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  /* Modals / Floating Elements */

  /* --- Motion --- */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* =========================================
   Base Styles Reset & Defaults
   ========================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family-sans);
  color: var(--color-text-body);
  background-color: var(--color-surface);
  line-height: var(--line-height-loose);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Classes */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 0;
  margin-bottom: var(--spacing-4);
  color: var(--color-text-title);
  line-height: var(--line-height-tight);
}

.text-h1 {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
}

.text-h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
}

.text-h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
}

.text-body-lg {
  font-size: var(--font-size-body-large);
  font-weight: var(--font-weight-regular);
}

.text-body {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
}

.text-caption {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-regular);
  color: var(--color-gray-500);
}

p {
  margin-top: 0;
  margin-bottom: var(--spacing-4);
}

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

a:hover,
a:focus {
  color: var(--color-primary-hover);
}

/* =========================================
   Layout Utilities
   ========================================= */

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

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--layout-gutter);
}

.flex {
  display: flex;
}

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

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

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

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

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

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

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

/* Spacer classes */
.mb-4 {
  margin-bottom: var(--spacing-4);
}

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

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

.my-12 {
  margin-top: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}


/* =========================================
   Components
   ========================================= */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  height: clamp(44px, calc(44px + 1vw), 52px);
  /* height 44px to 52px */
  padding: 0 var(--spacing-6);
  /* 16px to 24px conceptually based on padding class */
  border-radius: var(--radius-full);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  outline: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 3px var(--color-surface), 0 0 0 5px var(--color-primary);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  color: #FFFFFF;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn:active:not(:disabled) {
  transform: translateY(1px) scale(0.97);
  box-shadow: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Icon inside button */
.btn svg {
  width: 20px;
  height: 20px;
}

/* --- Cards --- */
.card {
  background-color: var(--color-card-bg);
  border-radius: var(--radius-md);
  /* 12px default, can be 16px via utility */
  box-shadow: var(--shadow-md);
  padding: var(--spacing-6);
  /* 24px */
  border: 1px solid var(--color-border);
  /* subtle gray border */
  transition: box-shadow var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

/* --- Inputs --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

.form-label {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-title);
}

.form-input {
  height: 44px;
  padding: 0 var(--spacing-3);
  border-radius: var(--radius-sm);
  /* 8px-10px conceptually */
  border: 1px solid var(--color-gray-300);
  background-color: #FFFFFF;
  color: var(--color-text-title);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(106, 39, 185, 0.1);
}

.form-input.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 1px #ef4444;
  animation: shake 0.4s ease-in-out;
}

.error-text {
  font-size: 12px;
  color: #ef4444;
  margin-top: -6px;
  display: none;
}

.error-text.active {
  display: block;
}

@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-4px);
  }

  50% {
    transform: translateX(4px);
  }

  75% {
    transform: translateX(-4px);
  }
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(106, 39, 185, 0.15);
  /* soft glow */
}

/* --- Modals --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  /* dark 40% opacity */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: 100%;
  max-width: 500px;
  /* 480-640px */
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-8);
  transform: translateY(20px) scale(0.95);
  transition: all var(--transition-normal);
}

.modal-backdrop.is-open .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-6);
}

.modal-title {
  margin: 0;
}

.modal-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-1);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-text-title);
}

/* --- Utility Classes --- */
.bg-primary {
  background: var(--color-primary);
  color: white;
}

.bg-secondary {
  background: var(--color-secondary);
  color: white;
}

.bg-gradient {
  background: var(--gradient-primary);
  color: white;
}

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

.bg-success {
  background: var(--color-success);
  color: white;
}

.bg-warning {
  background: var(--color-warning);
  color: white;
}

.bg-error {
  background: var(--color-error);
  color: white;
}

/* Responsive adjustments */
.col-span-12 {
  grid-column: span 12 / span 12;
}

.col-span-6 {
  grid-column: span 6 / span 6;
}

.col-span-4 {
  grid-column: span 4 / span 4;
}

@media (max-width: 640px) {

  /* sm breakpoint */
  .grid {
    grid-template-columns: 1fr;
  }

  .col-span-12,
  .col-span-6,
  .col-span-4,
  .md\:col-span-6,
  .md\:col-span-4,
  .lg\:col-span-6,
  .lg\:col-span-4 {
    grid-column: span 1 / span 1 !important;
  }
}

@media (min-width: 768px) {

  /* md breakpoint */
  .md\:col-span-6 {
    grid-column: span 6 / span 6;
  }

  .md\:col-span-4 {
    grid-column: span 4 / span 4;
  }

  .md\:col-span-3 {
    grid-column: span 3 / span 3;
  }
}

@media (min-width: 1024px) {

  /* lg breakpoint */
  .lg\:col-span-6 {
    grid-column: span 6 / span 6;
  }

  .lg\:col-span-4 {
    grid-column: span 4 / span 4;
  }

  .lg\:col-span-3 {
    grid-column: span 3 / span 3;
  }
}

/* --- Missing specific styles for landing page --- */

/* Haze Background */
.bg-haze {
  background-color: #fdfcff;
  background-image:
    radial-gradient(circle at 0% 30%, rgba(106, 39, 185, 0.35), transparent 60%),
    radial-gradient(circle at 100% 20%, rgba(236, 72, 153, 0.35), transparent 60%),
    radial-gradient(circle at 50% 60%, rgba(255, 190, 130, 0.30), transparent 60%),
    radial-gradient(circle at 80% 100%, rgba(236, 72, 153, 0.30), transparent 60%),
    radial-gradient(circle at 10% 90%, rgba(106, 39, 185, 0.25), transparent 60%),
    radial-gradient(circle at 40% 10%, rgba(180, 100, 255, 0.20), transparent 50%);
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
}

/* Glass Panels (replacing white/40 backdrop-blur-xl etc.) */
.glass-panel {
  background-color: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.glass-panel-heavy {
  background-color: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 1);
}

/* Accordion / FAQ Details logic */
details>summary {
  list-style: none;
}

details>summary::-webkit-details-marker {
  display: none;
}

details[open] summary~* {
  animation: sweep .5s ease-in-out;
}

@keyframes sweep {
  0% {
    opacity: 0;
    transform: translateY(-10px)
  }

  100% {
    opacity: 1;
    transform: translateY(0)
  }
}

details[open] summary .plus-icon {
  display: none;
}

details:not([open]) summary .minus-icon {
  display: none;
}

/* Hide scrollbar */
.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Animations */
@keyframes carouselAuto {

  0%,
  12% {
    transform: translateX(0%);
  }

  14.28%,
  26.28% {
    transform: translateX(-100%);
  }

  28.57%,
  40.57% {
    transform: translateX(-200%);
  }

  42.85%,
  54.85% {
    transform: translateX(-300%);
  }

  57.14%,
  69.14% {
    transform: translateX(-400%);
  }

  71.42%,
  83.42% {
    transform: translateX(-500%);
  }

  85.71%,
  97.71% {
    transform: translateX(-600%);
  }

  100% {
    transform: translateX(-700%);
  }
}

.carousel-track {
  animation: carouselAuto 22.75s cubic-bezier(0.45, 0, 0.55, 1) infinite;
  display: flex;
  height: 100%;
}

@keyframes portfolioSlider {

  0%,
  15% {
    transform: translateX(0%);
  }

  25%,
  40% {
    transform: translateX(calc(-100% / 4));
  }

  50%,
  65% {
    transform: translateX(calc(-200% / 4));
  }

  75%,
  90% {
    transform: translateX(calc(-300% / 4));
  }

  100% {
    transform: translateX(calc(-400% / 4));
  }
}

.portfolio-track {
  display: flex;
  width: calc(100% * (7/4));
  animation: portfolioSlider 16s ease-in-out infinite;
}

@media (max-width: 768px) {
  .portfolio-track {
    width: max-content;
    animation: none;
  }
}

.portfolio-slide {
  width: calc(100% / 7);
  flex-shrink: 0;
  padding: 0 12px;
}

@media (max-width: 768px) {
  .portfolio-slide {
    width: 280px;
    padding: 0 8px;
  }
}