/*
  Style System
  Aesthetic: Premium Utilitarian Minimalism & Editorial UI
  Zero gradients, zero heavy shadows, high typographic contrast.
*/

/* 1. CSS VARIABLES & TOKENS */
:root {
  /* Colors */
  --color-bg-canvas: #F8FAFC;     /* Crisp cool slate canvas */
  --color-bg-surface: #FFFFFF;    /* Pure white card surface */
  --color-bg-surface-alt: #F1F5F9;/* Cool light gray alt surface */
  --color-border: #E2E8F0;        /* Sharp cool grey border */
  --color-border-active: #0F172A; /* Slate-900 border */
  
  --color-text-primary: #0F172A;  /* Slate-900 primary text */
  --color-text-secondary: #475569;/* Slate-600 secondary text */
  --color-text-tertiary: #94A3B8; /* Slate-400 tertiary text */
  
  /* Curated Premium Accent Colors (Vibrant Indigo) */
  --color-accent: #4F46E5;        /* Vibrant Indigo */
  --color-accent-hover: #4338CA;  /* Darker Indigo */
  --color-accent-bg: rgba(79, 70, 229, 0.04);
  --color-accent-border: rgba(79, 70, 229, 0.15);
  
  /* Muted Cool Pastels */
  --color-pastel-green-bg: #DCFCE7;
  --color-pastel-green-text: #15803D;
  --color-pastel-blue-bg: #DBEAFE;
  --color-pastel-blue-text: #1D4ED8;
  --color-pastel-yellow-bg: #FEF9C3;
  --color-pastel-yellow-text: #A16207;
  --color-pastel-red-bg: #FEE2E2;
  --color-pastel-red-text: #B91C1C;

  /* Typography Pairing */
  --font-serif: 'Instrument Serif', 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', Menlo, Monaco, Consolas, monospace;

  /* Layout */
  --max-width: 1120px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
}

/* 2. BASE RESET & GENERAL STYLES */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--color-bg-canvas);
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background-color: var(--color-bg-canvas);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a, button, .btn, .bento-card, .service-card, .guarantee-item, .option-card {
  -webkit-tap-highlight-color: transparent;
}

/* 3. TYPOGRAPHIC SYSTEM */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.8rem, 3.8vw, 2.6rem);
}

h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
}

p {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.lead {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.5;
  color: var(--color-text-secondary);
  font-weight: 400;
  max-width: 650px;
}

.meta-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-tertiary);
}

/* 4. UTILITIES & REUSABLE COMPONENTS */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: clamp(60px, 8vw, 120px) 0;
}

.border-box {
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-surface);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.02);
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (hover: hover) {
  .border-box:hover {
    border-color: var(--color-accent-border);
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(79, 70, 229, 0.05), 0 2px 6px rgba(0, 0, 0, 0.02);
  }

  /* Ensure hover lift overrides the scroll-reveal transforms */
  .reveal.active.border-box:hover {
    transform: translateY(-4px);
  }
}

.border-box:active {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.85rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-smooth);
  white-space: normal;
  text-align: center;
}

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

@media (hover: hover) {
  .btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.2);
  }
}

.btn-primary:active {
  transform: scale(0.97);
}

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

@media (hover: hover) {
  .btn-secondary:hover {
    background-color: var(--color-bg-surface-alt);
    border-color: var(--color-accent-border);
    color: var(--color-accent);
    transform: translateY(-1px);
  }
}

.btn-secondary:active {
  transform: scale(0.97);
}

/* Tags / Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-green {
  background-color: var(--color-pastel-green-bg);
  color: var(--color-pastel-green-text);
}

.badge-blue {
  background-color: var(--color-pastel-blue-bg);
  color: var(--color-pastel-blue-text);
}

.badge-yellow {
  background-color: var(--color-pastel-yellow-bg);
  color: var(--color-pastel-yellow-text);
}

.badge-neutral {
  background-color: var(--color-bg-surface-alt);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* Keyboard UI micro-element */
kbd {
  font-family: var(--font-mono);
  background: var(--color-bg-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  box-shadow: 0 1px 0 rgba(0,0,0,0.03);
}

/* 5. NAVIGATION / HEADER */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
  transition: var(--transition-fast);
}

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

.brand {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
}

.brand::after {
  content: '.';
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

@media (hover: hover) {
  .nav-link:hover {
    color: var(--color-accent);
  }
}

@media (max-width: 768px) {
  .nav-links, .navbar .btn {
    display: none;
  }
}

/* 6. HERO SECTION */
.hero {
  padding-top: clamp(60px, 8vw, 100px);
  padding-bottom: clamp(50px, 6vw, 80px);
  position: relative;
  background: radial-gradient(circle at 85% 30%, rgba(79, 70, 229, 0.04) 0%, rgba(248, 250, 252, 0) 55%),
              radial-gradient(circle at 15% 75%, rgba(79, 70, 229, 0.02) 0%, rgba(248, 250, 252, 0) 45%);
}

.hero-tagline {
  margin-bottom: 16px;
}

.hero h1 {
  margin-bottom: 20px;
  max-width: 800px;
}

.hero .lead {
  margin-bottom: 32px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 3vw, 24px);
  border-top: 1px solid var(--color-border);
  padding-top: 32px;
  max-width: 800px;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-meta-item span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

.hero-meta-item p {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

@media (max-width: 600px) {
  .hero-meta-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* 7. BENTO GRID METRICS */
.grid-bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(16px, 2.5vw, 24px);
}

.bento-card {
  padding: clamp(24px, 4vw, 40px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.bento-card .metric {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  line-height: 1;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: baseline;
}

.bento-card .metric span {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-left: 6px;
  letter-spacing: normal;
  display: inline-block;
}

.bento-card h4 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--color-text-primary);
}

.bento-card p {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.bento-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-bg);
  border: 1px solid var(--color-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.bento-icon-wrapper i {
  color: var(--color-accent);
}

/* Bento Sizing Configurations */
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

@media (max-width: 900px) {
  .col-6, .col-4, .col-8 {
    grid-column: span 12;
  }
}

/* 8. SERVICES SECTION */
.services-intro {
  margin-bottom: clamp(40px, 6vw, 64px);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
}

.services-intro h2 {
  max-width: 500px;
}

.services-intro p {
  max-width: 400px;
  font-size: 0.95rem;
}

.service-card {
  padding: clamp(24px, 4vw, 40px);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-card-top h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.service-card p {
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 20px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.service-tags kbd {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  box-shadow: none;
}

.service-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  margin-top: auto;
}

.service-footer span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.service-footer a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
}

@media (hover: hover) {
  .service-footer a:hover {
    gap: 10px;
  }

  .service-card:hover .service-footer a {
    color: var(--color-text-primary);
  }

  .service-card:hover .service-footer a i {
    transform: translateX(4px);
  }
}

/* 9. METHODOLOGY */
.methodology-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: 48px;
}

.methodology-step {
  position: relative;
}

.methodology-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: block;
}

.methodology-step h4 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--color-text-primary);
}

.methodology-step p {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

@media (max-width: 900px) {
  .methodology-list {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* 10. GUARANTEES SECTION */
.guarantees-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.5vw, 24px);
  margin-top: 48px;
}

.guarantee-item {
  padding: clamp(24px, 4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guarantee-item h4 {
  font-size: 1.25rem;
  color: var(--color-text-primary);
}

.guarantee-item p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .guarantees-grid {
    grid-template-columns: 1fr;
  }
}

/* 11. B2B CONTACT FORM */
.contact-section {
  background-color: var(--color-bg-canvas);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.contact-layout {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.contact-info h2 {
  margin-bottom: 16px;
}

.contact-info .lead {
  margin-bottom: 24px;
}

.contact-meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-meta-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.contact-meta-item i {
  font-size: 1.1rem;
  color: var(--color-accent);
}

.brief-form {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 5vw, 48px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  overflow: hidden;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-control {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-surface-alt);
  color: var(--color-text-primary);
  transition: var(--transition-fast);
  width: 100%;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-text-primary);
  background-color: var(--color-bg-surface);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 4px;
}

.form-checkbox input {
  margin-top: 3px;
  cursor: pointer;
}

.form-checkbox label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  cursor: pointer;
}

.form-checkbox a {
  text-decoration: underline;
}

/* Success notification inside form */
.form-success-container {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
  gap: 12px;
}

.form-success-container h3 {
  font-size: 1.5rem;
  color: var(--color-pastel-green-text);
}

.form-success-container p {
  max-width: 320px;
  font-size: 0.88rem;
}

@media (max-width: 900px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* 12. FOOTER */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.footer-brand p {
  font-size: 0.8rem;
  max-width: 250px;
}

.footer-nav {
  display: flex;
  gap: 48px;
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav-col h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

@media (hover: hover) {
  .footer-nav-col a:hover {
    color: var(--color-text-primary);
  }
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-legal {
  display: flex;
  gap: 16px;
}

.footer-legal a {
  text-decoration: underline;
}

.footer-socials {
  display: flex;
  gap: 12px;
  font-size: 1.1rem;
}

@media (max-width: 768px) {
  .footer-nav {
    gap: 24px;
  }
}

@media (max-width: 600px) {
  .footer-top {
    flex-direction: column;
  }
  
  .footer-nav {
    flex-direction: column;
    gap: 20px;
  }
  
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* 13. ANIMATIONS & TRANSITIONS */
/* Scroll entry base class */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Staggered delay helpers */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }