/* ============================================
   TSM — Tecnologia su Misura
   Sophisticated boutique website
   ============================================ */

:root {
  /* Palette — pure monochrome with refined neutrals */
  --color-black: #0a0a0a;
  --color-near-black: #141414;
  --color-dark: #1f1f1f;
  --color-gray-900: #2a2a2a;
  --color-gray-700: #4a4a4a;
  --color-gray-500: #6b6b6b;
  --color-gray-400: #8a8a8a;
  --color-gray-300: #b0b0b0;
  --color-gray-200: #d4d4d4;
  --color-gray-100: #ebebeb;
  --color-off-white: #f7f7f5;
  --color-white: #ffffff;

  /* Typography */
  --font-serif: 'Cormorant Garamond', 'Georgia', serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Layout */
  --container-max: 1120px;
  --container-narrow: 720px;
  --header-height: 80px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration: 0.4s;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-dark);
  background-color: var(--color-white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration) var(--ease-out);
}

ul {
  list-style: none;
}

button,
input,
textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Typography helpers */
.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gray-500);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.15;
  color: var(--color-black);
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--color-gray-500);
  max-width: 36rem;
  margin-top: var(--space-md);
  line-height: 1.7;
}

.section-header {
  margin-bottom: var(--space-xl);
}

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

.section-header.center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

.lead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--color-near-black);
  margin-bottom: var(--space-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.85rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1.5px solid transparent;
  transition: all 0.35s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background-color: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

.btn-primary:hover {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}

.btn-outline:hover {
  background-color: var(--color-black);
  color: var(--color-white);
}

.btn-full {
  width: 100%;
}

/* ========== HEADER ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.header.scrolled {
  border-bottom-color: var(--color-gray-100);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-black);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav-link {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-700);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-black);
  transition: width 0.3s var(--ease-out);
}

.nav-link:hover {
  color: var(--color-black);
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 32px;
  height: 32px;
  z-index: 1001;
}

.menu-bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-black);
  transition: transform 0.3s var(--ease-out), opacity 0.3s ease;
}

.menu-toggle.active .menu-bar:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.menu-toggle.active .menu-bar:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: calc(var(--header-height) + 2rem) var(--space-md) 4rem;
  position: relative;
  background-color: var(--color-white);
}

.hero-content {
  text-align: center;
  max-width: 720px;
}

.hero-logo-wrap {
  margin-bottom: var(--space-lg);
  display: flex;
  justify-content: center;
}

.hero-logo {
  width: 140px;
  height: auto;
  max-height: 210px;
  object-fit: contain;
  filter: contrast(1.05);
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.05;
  color: var(--color-black);
  margin-bottom: var(--space-md);
}

.hero-title-main {
  display: block;
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  letter-spacing: -0.02em;
}

.hero-title-sub {
  display: block;
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-style: italic;
  font-weight: 300;
  letter-spacing: -0.01em;
}

.hero-tagline {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--color-gray-700);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.hero-audience {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: var(--space-xl);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ========== SECTIONS ========== */
.section {
  padding: var(--space-3xl) 0;
}

/* Filosofia */
.filosofia {
  background-color: var(--color-off-white);
}

.filosofia-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.filosofia-text p {
  margin-bottom: var(--space-md);
  color: var(--color-gray-700);
}

.filosofia-text p:last-child {
  margin-bottom: 0;
}

.filosofia-quote {
  position: relative;
  padding: var(--space-lg);
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
}

.filosofia-quote blockquote {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.4;
  color: var(--color-black);
}

/* Servizi */
.servizi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.servizio-card {
  padding: var(--space-lg) var(--space-md);
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
  transition: border-color 0.35s var(--ease-out), transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.servizio-card:hover {
  border-color: var(--color-black);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.servizio-number {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 300;
  color: var(--color-gray-300);
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}

.servizio-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.servizio-desc {
  font-size: 0.95rem;
  color: var(--color-gray-700);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.servizio-list {
  border-top: 1px solid var(--color-gray-100);
  padding-top: var(--space-md);
}

.servizio-list li {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  padding: 0.35rem 0;
  position: relative;
  padding-left: 1.1rem;
}

.servizio-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-gray-300);
}

/* Metodo */
.metodo {
  background-color: var(--color-black);
  color: var(--color-white);
}

.metodo .section-label {
  color: var(--color-gray-400);
}

.metodo .section-title {
  color: var(--color-white);
}

.metodo .section-desc {
  color: var(--color-gray-300);
}

.metodo-timeline {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
}

.metodo-timeline::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background-color: var(--color-gray-900);
}

.metodo-step {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  position: relative;
}

.metodo-step:last-child {
  margin-bottom: 0;
}

.step-marker {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border: 1px solid var(--color-gray-700);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-black);
  z-index: 1;
}

.step-num {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--color-white);
}

.step-content h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-white);
}

.step-content p {
  font-size: 0.975rem;
  color: var(--color-gray-300);
  line-height: 1.65;
}

/* Per chi */
.perchi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.perchi-card {
  padding: var(--space-lg) var(--space-md);
  border: 1px solid var(--color-gray-200);
  transition: border-color 0.3s ease;
}

.perchi-card:hover {
  border-color: var(--color-black);
}

.perchi-card h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-black);
}

.perchi-card p {
  font-size: 0.95rem;
  color: var(--color-gray-700);
  line-height: 1.65;
}

/* Pricing */
.pricing {
  background-color: var(--color-off-white);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.pricing-card {
  padding: var(--space-lg) var(--space-md);
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
  transition: border-color 0.35s var(--ease-out), transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
  height: 100%;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.pricing-card:hover {
  border-color: var(--color-black);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.pricing-label {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--color-black);
  margin-bottom: var(--space-md);
}

.pricing-price {
  margin-bottom: var(--space-sm);
}

.pricing-from {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: 0.35rem;
}

.pricing-amount {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-black);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.pricing-iva {
  display: block;
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-top: 0.25rem;
}

.pricing-note {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  line-height: 1.55;
  margin-top: auto;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-gray-100);
}

/* Contatti */
.contatti {
  background-color: var(--color-off-white);
  padding-bottom: var(--space-3xl);
}

.contatti-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contatti-lead {
  font-size: 1.1rem;
  color: var(--color-gray-700);
  margin: var(--space-md) 0 var(--space-lg);
  max-width: 28rem;
}

.contatti-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.detail-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

.detail-item a {
  font-size: 1.05rem;
  color: var(--color-black);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
  width: fit-content;
}

.detail-item a:hover {
  border-bottom-color: var(--color-black);
}

/* Form */
.contatti-form {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border: 1px solid var(--color-gray-200);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gray-500);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-gray-200);
  color: var(--color-black);
  transition: border-color 0.25s ease;
  background: transparent;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--color-black);
}

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

.form-group .error-msg {
  display: block;
  font-size: 0.75rem;
  color: #b33;
  margin-top: 0.35rem;
  min-height: 1.1em;
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-bottom-color: #b33;
}

.form-success {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-off-white);
  border: 1px solid var(--color-gray-200);
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-black);
}

/* Footer */
.footer {
  background-color: var(--color-black);
  color: var(--color-gray-300);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo {
  height: 56px;
  width: auto;
  filter: invert(1) brightness(1.1);
  opacity: 0.9;
}

.footer-brand p {
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--color-gray-400);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.footer-links a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-copy {
  margin-top: var(--space-sm);
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

/* ========== ANIMATIONS — elegant "abito sfoderato" reveal ========== */
/* Hero: sequential unveil on load (like a tailored suit being carefully presented) */
@keyframes heroUnveil {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hero-logo-wrap {
  animation: heroUnveil 1.15s var(--ease-out) 0.15s both;
}

.hero-title {
  animation: heroUnveil 1.2s var(--ease-out) 0.32s both;
}

.hero-tagline {
  animation: heroUnveil 1.15s var(--ease-out) 0.52s both;
}

.hero-audience {
  animation: heroUnveil 1.1s var(--ease-out) 0.68s both;
}

.hero-cta {
  animation: heroUnveil 1.15s var(--ease-out) 0.85s both;
}

/* Scroll reveals — fluid, soft scale + settle (desktop & mobile) */
.reveal {
  opacity: 0;
  transform: translateY(26px) scale(0.985);
  transition:
    opacity 1.05s var(--ease-out),
    transform 1.05s var(--ease-out);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Stagger helpers (applied via JS for cards / steps) */
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }

/* ========== RESPONSIVE ========== */
@media (max-width: 960px) {
  .servizi-grid,
  .perchi-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

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

  .contatti-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    background-color: var(--color-white);
    padding: calc(var(--header-height) + 2rem) 2rem 2rem;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease-out);
    border-left: 1px solid var(--color-gray-100);
    z-index: 999;
  }

  .nav.open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .nav-link {
    font-size: 1rem;
  }

  .menu-toggle {
    display: flex;
  }

  .logo-text {
    display: none;
  }

  .hero {
    padding-top: calc(var(--header-height) + 1.5rem);
  }

  .hero-logo {
    width: 110px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

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

  .section {
    padding: var(--space-2xl) 0;
  }

  .metodo-timeline::before {
    left: 19px;
  }

  .step-marker {
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

  .contatti-form {
    padding: var(--space-md);
  }

  .filosofia-quote {
    padding: var(--space-md);
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}