/* ==========================================================================
   AVVENZIO — STYLE SHEET
   Structure:
   1. Design tokens
   2. Reset & base
   3. Layout helpers / utilities
   4. Buttons & form controls
   5. Header & navigation
   6. Hero
   7. Services
   8. Why choose
   9. Process
   10. Smart scheduling platform spotlight (SaaS)
   11. About
   12. Portfolio / selected work
   13. FAQ
   14. Contact
   15. Footer
   16. Animations & reduced motion
   17. Responsive breakpoints
   ========================================================================== */

/* ---------------------------------------------------------------------- */
/* 1. DESIGN TOKENS                                                        */
/* ---------------------------------------------------------------------- */
:root {
  /* Color palette */
  --color-bg: #06070b;
  --color-bg-alt: #0b0e16;
  --color-surface: #11151f;
  --color-surface-alt: #161b27;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);

  --color-text: #f5f6fa;
  --color-text-soft: #c4c8d4;
  --color-text-muted: #868ca0;

  --color-accent: #5b8cff;
  --color-accent-strong: #7aa2ff;
  --color-accent-soft: rgba(91, 140, 255, 0.14);
  --color-accent-contrast: #060b16;

  --gradient-accent: linear-gradient(135deg, #5b8cff 0%, #8a5cf6 100%);
  --gradient-surface: linear-gradient(160deg, rgba(91, 140, 255, 0.08), rgba(138, 92, 246, 0.03));

  --color-success: #4ade80;
  --color-error: #ff6b6b;

  /* Typography */
  --font-display: "Clash Grotesk", "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  --fs-xs: 0.8rem;
  --fs-sm: 0.925rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: 3rem;
  --fs-4xl: 3.75rem;

  /* Spacing scale */
  --space-xs: 0.5rem;
  --space-sm: 0.875rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Layout */
  --container-max: 1180px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --header-height: 76px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 180ms var(--ease);
  --transition-base: 320ms var(--ease);
  --transition-slow: 560ms var(--ease);

  --shadow-soft: 0 20px 60px -24px rgba(0, 0, 0, 0.55);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 24px 48px -32px rgba(0, 0, 0, 0.6);
}

/* ---------------------------------------------------------------------- */
/* 2. RESET & BASE                                                         */
/* ---------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

button {
  font-family: inherit;
  cursor: pointer;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-accent-strong);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--color-accent);
  color: #fff;
}

/* ---------------------------------------------------------------------- */
/* 3. LAYOUT HELPERS                                                       */
/* ---------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section {
  padding-block: var(--space-2xl);
  position: relative;
}

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

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-xl);
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-strong);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.section-head h2 {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-sm);
}

.section-head p {
  color: var(--color-text-soft);
  font-size: var(--fs-md);
}

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

.skip-link {
  position: absolute;
  top: -48px;
  left: var(--space-md);
  background: var(--color-accent);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-sm);
}

/* ---------------------------------------------------------------------- */
/* 4. BUTTONS & FORM CONTROLS                                              */
/* ---------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  border-radius: 999px;
  font-size: var(--fs-sm);
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--gradient-accent);
  color: #06080f;
}

.btn-primary:hover {
  box-shadow: 0 12px 32px -8px rgba(91, 140, 255, 0.55);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover {
  border-color: var(--color-accent-strong);
  color: var(--color-accent-strong);
  transform: translateY(-2px);
}

.btn-ghost {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
  padding: 0.75rem 1.4rem;
}

.btn-ghost:hover {
  border-color: var(--color-accent-strong);
  color: var(--color-accent-strong);
}

.btn-block {
  width: 100%;
}

.btn[disabled],
.btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-sm {
  padding: 0.6rem 1.2rem;
  font-size: var(--fs-xs);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.field label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-soft);
}

.field label .req {
  color: var(--color-accent-strong);
}

.field input,
.field select,
.field textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--color-text-muted);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--color-accent-strong);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
  outline: none;
}

.field textarea {
  resize: vertical;
  min-height: 130px;
}

.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: var(--color-error);
}

.field-error {
  font-size: var(--fs-xs);
  color: var(--color-error);
  min-height: 1em;
}

.form-note {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  line-height: 1.6;
}

.form-feedback {
  margin-top: var(--space-md);
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  display: none;
}

.form-feedback.is-visible {
  display: block;
}

.form-feedback.is-success {
  background: rgba(74, 222, 128, 0.12);
  color: var(--color-success);
  border: 1px solid rgba(74, 222, 128, 0.3);
}

.form-feedback.is-error {
  background: rgba(255, 107, 107, 0.1);
  color: var(--color-error);
  border: 1px solid rgba(255, 107, 107, 0.3);
}

/* ---------------------------------------------------------------------- */
/* 5. HEADER & NAVIGATION                                                  */
/* ---------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 900;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(6, 7, 11, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(6, 7, 11, 0.86);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.logo-mark {
  display: block;
}

.logo-word {
  font-family: var(--font-display);
}

.logo-word .accent-dot {
  color: var(--color-accent-strong);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-list a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-soft);
  position: relative;
  padding-block: 0.4rem;
  transition: color var(--transition-fast);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--color-text);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width var(--transition-fast);
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after {
  width: 100%;
}

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

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------------------------------------------------------------- */
/* 6. HERO                                                                 */
/* ---------------------------------------------------------------------- */
.hero {
  padding-top: calc(var(--header-height) + var(--space-2xl));
  padding-bottom: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(91, 140, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-content h1 {
  font-size: var(--fs-4xl);
  margin-bottom: var(--space-md);
}

.hero-content .gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-content p {
  font-size: var(--fs-md);
  color: var(--color-text-soft);
  max-width: 540px;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-meta .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-strong);
}

/* Hero visual — abstract layered composition, no fake browser chrome,
   no literal URLs, no empty placeholder shapes. */
.hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-lg) var(--space-sm);
}

.visual-stage {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1 / 0.92;
}

.visual-panel {
  position: absolute;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
}

.panel-a {
  inset: 6% 16% auto 2%;
  height: 58%;
  background: var(--color-surface);
  transform: rotate(-5deg);
  z-index: 1;
}

.panel-a .panel-blob {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient-accent);
  opacity: 0.9;
  margin-bottom: var(--space-md);
  filter: blur(0.3px);
}

.panel-a .panel-lines {
  display: grid;
  gap: 10px;
}

.panel-a .p-line {
  display: block;
  height: 9px;
  border-radius: 6px;
  background: var(--color-surface-alt);
}

.panel-a .p-line.w-80 {
  width: 80%;
}

.panel-a .p-line.w-55 {
  width: 55%;
}

.panel-a .p-line.w-65 {
  width: 65%;
}

.panel-b {
  inset: auto 4% 4% 28%;
  height: 50%;
  background: var(--gradient-surface), var(--color-surface-alt);
  transform: rotate(4deg);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel-b .panel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
}

.panel-b .panel-grid span {
  display: block;
  aspect-ratio: 1;
  border-radius: 6px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
}

.panel-b .panel-grid span.is-active {
  background: var(--gradient-accent);
  border-color: transparent;
}

.visual-ring {
  position: absolute;
  top: -6%;
  right: 2%;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 1px solid var(--color-border-strong);
  z-index: 0;
}

.visual-dot-accent {
  position: absolute;
  bottom: 10%;
  left: 6%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent-strong);
  box-shadow: 0 0 0 6px var(--color-accent-soft);
  z-index: 3;
}

.visual-badge {
  margin-top: var(--space-lg);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-strong);
  font-size: var(--fs-xs);
  font-weight: 600;
  box-shadow: var(--shadow-soft);
}

.visual-badge .badge-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gradient-accent);
  flex-shrink: 0;
}

.visual-badge .badge-icon svg {
  width: 13px;
  height: 13px;
  stroke: var(--color-accent-contrast);
}

/* ---------------------------------------------------------------------- */
/* 7. SERVICES                                                             */
/* ---------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient-accent);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-accent-contrast);
}

.service-card h3 {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-sm);
}

.service-card > p {
  color: var(--color-text-soft);
  margin-bottom: var(--space-md);
}

.service-list {
  display: grid;
  gap: 0.6rem;
  margin-bottom: var(--space-lg);
}

.service-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: var(--fs-sm);
  color: var(--color-text-soft);
}

.service-list li::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 0.5em;
  border-radius: 50%;
  background: var(--color-accent-strong);
}

.service-card .btn {
  margin-top: auto;
}

/* ---------------------------------------------------------------------- */
/* 8. WHY CHOOSE                                                           */
/* ---------------------------------------------------------------------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.why-card {
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.why-card .why-index {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  color: var(--color-accent-strong);
  margin-bottom: var(--space-sm);
  opacity: 0.8;
}

.why-card h3 {
  font-size: var(--fs-md);
  margin-bottom: var(--space-sm);
}

.why-card p {
  color: var(--color-text-soft);
  font-size: var(--fs-sm);
}

/* ---------------------------------------------------------------------- */
/* 9. PROCESS                                                              */
/* ---------------------------------------------------------------------- */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  position: relative;
}

.process-timeline::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-border);
}

.process-step {
  position: relative;
  padding-top: var(--space-xl);
}

.process-step .step-number {
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-accent-strong);
  z-index: 1;
}

.process-step h3 {
  font-size: var(--fs-md);
  margin-bottom: var(--space-sm);
}

.process-step p {
  color: var(--color-text-soft);
  font-size: var(--fs-sm);
}

.process-note {
  margin-top: var(--space-xl);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  text-align: center;
}

/* ---------------------------------------------------------------------- */
/* 10. SMART SCHEDULING PLATFORM SPOTLIGHT (SaaS)                          */
/* ---------------------------------------------------------------------- */
.saas-spotlight {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  margin-inline: var(--space-md);
  padding: var(--space-2xl) var(--space-lg);
  border: 1px solid var(--color-border);
}

.saas-spotlight .container {
  padding-inline: 0;
  max-width: calc(var(--container-max) - 2 * var(--space-lg));
}

.saas-intro {
  max-width: 680px;
  margin-bottom: var(--space-xl);
}

.saas-intro p {
  color: var(--color-text-soft);
  font-size: var(--fs-md);
}

.saas-components {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.saas-component {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.saas-component h3 {
  font-size: var(--fs-base);
  margin-bottom: var(--space-sm);
  color: var(--color-accent-strong);
}

.saas-component ul {
  display: grid;
  gap: 0.5rem;
}

.saas-component li {
  font-size: var(--fs-sm);
  color: var(--color-text-soft);
  padding-left: 1rem;
  position: relative;
}

.saas-component li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

.saas-scope-note {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  max-width: 760px;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

/* ---------------------------------------------------------------------- */
/* 11. ABOUT                                                               */
/* ---------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-xl);
  align-items: center;
}

.about-text p {
  color: var(--color-text-soft);
  margin-bottom: var(--space-md);
  font-size: var(--fs-md);
}

.about-visual {
  display: grid;
  gap: var(--space-sm);
}

.about-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.about-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-surface);
  pointer-events: none;
}

.about-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  position: relative;
}

.about-stat {
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
}

.about-stat h4 {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--color-accent-strong);
  margin-bottom: 0.3rem;
}

.about-stat p {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin: 0;
}

/* ---------------------------------------------------------------------- */
/* 12. PORTFOLIO / SELECTED WORK                                           */
/* ---------------------------------------------------------------------- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.portfolio-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-surface);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.portfolio-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-strong);
}

.portfolio-preview {
  height: 200px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.portfolio-tag {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(6, 7, 11, 0.8);
  border: 1px solid var(--color-border-strong);
  color: var(--color-accent-strong);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  z-index: 2;
}

/* Conceptual preview compositions (pure CSS, no stock imagery) */
.preview-website {
  width: 86%;
  height: 78%;
  border-radius: 10px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  padding: 10px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 8px;
}

.preview-website .pw-bar {
  display: flex;
  gap: 5px;
}

.preview-website .pw-bar span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-border-strong);
}

.preview-website .pw-body {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 8px;
}

.preview-website .pw-block {
  border-radius: 6px;
  background: var(--color-bg-alt);
}

.preview-website .pw-block.accent {
  background: var(--gradient-accent);
}

.preview-landing {
  width: 86%;
  height: 78%;
  border-radius: 10px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.preview-landing .pl-line {
  height: 8px;
  border-radius: 4px;
  background: var(--color-bg-alt);
}

.preview-landing .pl-line.w-60 {
  width: 60%;
}

.preview-landing .pl-line.w-40 {
  width: 40%;
}

.preview-landing .pl-cta {
  margin-top: 6px;
  width: 44%;
  height: 22px;
  border-radius: 999px;
  background: var(--gradient-accent);
}

.preview-schedule {
  width: 86%;
  height: 78%;
  border-radius: 10px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.preview-schedule .ps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.preview-schedule .ps-grid span {
  display: block;
  aspect-ratio: 1;
  border-radius: 6px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
}

.preview-schedule .ps-grid span.is-active {
  background: var(--gradient-accent);
  border-color: transparent;
}

.preview-schedule .ps-cta {
  align-self: center;
  width: 50%;
  height: 20px;
  border-radius: 999px;
  background: var(--gradient-accent);
}

.portfolio-info {
  padding: var(--space-md);
}

.portfolio-info h3 {
  font-size: var(--fs-md);
  margin-bottom: 0.4rem;
}

.portfolio-info p {
  font-size: var(--fs-sm);
  color: var(--color-text-soft);
}

/* ---------------------------------------------------------------------- */
/* 13. FAQ                                                                 */
/* ---------------------------------------------------------------------- */
.faq-list {
  max-width: 820px;
  margin-inline: auto;
  display: grid;
  gap: var(--space-sm);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  background: transparent;
  border: none;
  color: var(--color-text);
  padding: var(--space-md) var(--space-lg);
  font-size: var(--fs-md);
  font-weight: 600;
  text-align: left;
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  position: relative;
}

.faq-question .faq-icon::before,
.faq-question .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--color-accent-strong);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: transform var(--transition-fast);
}

.faq-question .faq-icon::before {
  width: 16px;
  height: 2px;
}

.faq-question .faq-icon::after {
  width: 2px;
  height: 16px;
}

.faq-question[aria-expanded="true"] .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
  padding-inline: var(--space-lg);
}

.faq-answer p {
  color: var(--color-text-soft);
  padding-bottom: var(--space-md);
  font-size: var(--fs-sm);
}

.faq-item.is-open .faq-answer {
  padding-bottom: 0;
}

/* ---------------------------------------------------------------------- */
/* 14. CONTACT                                                             */
/* ---------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-channels {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.contact-channel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.contact-channel-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.channel-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.channel-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-accent-strong);
}

.contact-channel-info h3 {
  font-size: var(--fs-base);
  margin-bottom: 0.15rem;
}

.contact-channel-info p {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin: 0;
}

.channel-pending {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-style: italic;
}

.contact-form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* ---------------------------------------------------------------------- */
/* 15. FOOTER                                                              */
/* ---------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-xl) var(--space-lg);
  background: var(--color-bg-alt);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.footer-brand .logo {
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  max-width: 280px;
}

.footer-col h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.footer-col ul {
  display: grid;
  gap: 0.6rem;
}

.footer-col a {
  font-size: var(--fs-sm);
  color: var(--color-text-soft);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-accent-strong);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

.footer-legal {
  display: flex;
  gap: var(--space-md);
}

.footer-legal a {
  color: var(--color-text-muted);
}

.footer-legal a:hover {
  color: var(--color-accent-strong);
}

/* ---------------------------------------------------------------------- */
/* 16. ANIMATIONS & MOTION PREFERENCES                                     */
/* ---------------------------------------------------------------------- */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}

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

  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover,
  .service-card:hover,
  .portfolio-card:hover {
    transform: none;
  }

  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ---------------------------------------------------------------------- */
/* 17. RESPONSIVE BREAKPOINTS                                              */
/* ---------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    max-width: 480px;
    margin-inline: auto;
  }

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

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

  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
    row-gap: var(--space-xl);
  }

  .process-timeline::before {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-visual {
    order: -1;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: rgba(6, 7, 11, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: var(--space-lg) var(--space-md);
    gap: var(--space-lg);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base);
    overflow-y: auto;
  }

  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .nav-list a {
    font-size: var(--fs-md);
  }

  .nav-cta {
    width: 100%;
  }

  .nav-cta .btn {
    width: 100%;
  }

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

@media (max-width: 720px) {
  :root {
    --fs-4xl: 2.5rem;
    --fs-3xl: 2.1rem;
    --fs-2xl: 1.75rem;
    --space-2xl: 4rem;
    --space-3xl: 5rem;
  }

  .services-grid,
  .why-grid,
  .process-timeline,
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .saas-spotlight {
    margin-inline: var(--space-sm);
    padding: var(--space-xl) var(--space-md);
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }
}