/* Root variables */
:root {
  --color-background: #ffffff;
  --color-surface: rgba(255, 255, 255, 0.85);
  --color-surface-elevated: rgba(255, 255, 255, 0.92);
  --color-surface-glass: rgba(255, 255, 255, 0.14);
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-border-subtle: rgba(148, 163, 184, 0.38);

  --color-primary: #12b5c9;
  --color-primary-soft: rgba(18, 181, 201, 0.1);
  --color-primary-strong: #0284c7;

  --color-success: #16a34a;
  --color-warning: #f97316;
  --color-danger: #ef4444;

  --color-aqua: #12b5c9;
  --color-mint: #34d399;
  --color-coral: #fb7185;
  --color-lavender: #a855f7;

  --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: #1f2933;
  --color-gray-900: #111827;

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "SF Pro Display", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --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: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  --line-height-tight: 1.15;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.9rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2.25rem;
  --radius-pill: 999px;

  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
  --shadow-medium: 0 22px 65px rgba(15, 23, 42, 0.15);
  --shadow-glass: 0 18px 50px rgba(15, 23, 42, 0.28);

  --backdrop-glass: blur(22px) saturate(150%);

  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 260ms ease-out;

  --container-width: 1120px;
}

@media (min-width: 768px) {
  :root {
    --font-size-4xl: 2.7rem;
    --font-size-5xl: 3.4rem;
  }
}

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

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

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

img {
  height: auto;
}

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

button {
  border: none;
  background: none;
  padding: 0;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
}

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

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Base typography */
body {
  background-image: radial-gradient(circle at top left, rgba(18, 181, 201, 0.14), transparent 52%), radial-gradient(circle at top right, rgba(168, 85, 247, 0.16), transparent 50%), radial-gradient(circle at bottom left, rgba(251, 113, 133, 0.15), transparent 55%);
  background-attachment: fixed;
}

main {
  display: block;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-gray-900);
}

h1 {
  font-size: clamp(2.2rem, 5vw, var(--font-size-5xl));
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.8rem, 3.4vw, var(--font-size-3xl));
  line-height: var(--line-height-snug);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: var(--font-size-2xl);
  line-height: var(--line-height-snug);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-snug);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
}

strong,
b {
  font-weight: 600;
}

small {
  font-size: var(--font-size-sm);
}

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

/* Layout utilities */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.section {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
}

.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

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

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

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

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 767.98px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

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

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.78rem 1.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base), border-color var(--transition-base), opacity var(--transition-fast);
}

.btn-primary {
  color: #0b1120;
  background-image: linear-gradient(135deg, var(--color-aqua), var(--color-mint));
  box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: var(--shadow-glass);
}

.btn-outline {
  color: var(--color-gray-900);
  background-color: rgba(255, 255, 255, 0.85);
  border-color: rgba(148, 163, 184, 0.6);
  box-shadow: var(--shadow-soft);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background-color: rgba(255, 255, 255, 0.98);
}

.btn-ghost {
  color: var(--color-gray-900);
  background-color: transparent;
  border-radius: var(--radius-pill);
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 0.95rem 2.1rem;
  font-size: var(--font-size-base);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
}

/* Form elements */
.input,
textarea,
select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(255, 255, 255, 0.92);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), transform var(--transition-fast);
}

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

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

.input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(18, 181, 201, 0.5), 0 18px 35px rgba(15, 23, 42, 0.18);
  background-color: #ffffff;
}

input[disabled],
textarea[disabled],
select[disabled] {
  background-color: var(--color-gray-100);
  color: var(--color-gray-400);
  cursor: not-allowed;
}

label {
  display: inline-block;
  margin-bottom: 0.35rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-800);
}

.field-description {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.field-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: 0.25rem;
}

/* Cards / surfaces */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: radial-gradient(circle at top left, rgba(18, 181, 201, 0.06), transparent 52%), radial-gradient(circle at bottom right, rgba(251, 113, 133, 0.06), transparent 55%), var(--color-surface);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.35);
  backdrop-filter: blur(18px) saturate(145%);
}

.card-glass {
  position: relative;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(148, 163, 184, 0.45);
  box-shadow: var(--shadow-glass);
  backdrop-filter: var(--backdrop-glass);
}

.card-rounded {
  border-radius: var(--radius-xl);
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 500;
  background-color: rgba(18, 181, 201, 0.08);
  color: var(--color-gray-700);
}

/* Hero utilities */
.hero-fullscreen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, 0.68) 0%, rgba(15, 23, 42, 0.18) 40%, rgba(15, 23, 42, 0.52) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-image-cover {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Glassmorphism helpers */
.glass-surface {
  background: var(--color-surface-glass);
  backdrop-filter: var(--backdrop-glass);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.45);
  box-shadow: var(--shadow-glass);
}

.glass-nav {
  backdrop-filter: blur(18px) saturate(140%);
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.78));
  border-bottom: 1px solid rgba(226, 232, 240, 0.85);
}

/* Gradient utilities */
.gradient-rainbow-soft {
  background-image: linear-gradient(120deg, rgba(18, 181, 201, 0.16), rgba(52, 211, 153, 0.18), rgba(251, 113, 133, 0.18), rgba(168, 85, 247, 0.18));
}

.gradient-chip {
  background-image: radial-gradient(circle at top left, rgba(18, 181, 201, 0.2), transparent 55%), radial-gradient(circle at bottom right, rgba(168, 85, 247, 0.2), transparent 55%);
}

.chip-outline {
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.55);
  padding: 0.35rem 0.9rem;
  font-size: var(--font-size-xs);
  backdrop-filter: blur(14px);
}

/* Media wrappers */
.media-rounded {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.media-pill {
  border-radius: var(--radius-pill);
  overflow: hidden;
}

/* Micro animation helpers */
.hover-rise {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-rise:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.hover-fade {
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.hover-fade:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.pulse-soft {
  position: relative;
}

.pulse-soft::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: inherit;
  border: 1px solid rgba(18, 181, 201, 0.22);
  opacity: 0;
}

@keyframes pulse-border {
  0% { opacity: 0; transform: scale(0.97); }
  50% { opacity: 1; transform: scale(1.03); }
  100% { opacity: 0; transform: scale(1.06); }
}

.animate-pulse-border::after {
  animation: pulse-border 2.4s ease-out infinite;
}

/* Sticky CTA helper */
.sticky-cta {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 40;
}

@media (min-width: 768px) {
  .sticky-cta {
    bottom: var(--space-6);
    right: var(--space-6);
  }
}

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

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.5rem 0.9rem;
  background-color: #ffffff;
  color: #111827;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-soft);
  transform: translateY(-150%);
  transition: transform var(--transition-base);
  z-index: 50;
}

.skip-link:focus-visible {
  transform: translateY(0);
}