/* ============================================================
   THE PLAYBOOKS — style.css
   Design System: Signal Intelligence
   ============================================================ */

/* --- Google Fonts are loaded in index.html --- */

/* ============================================================
   1. CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Palette */
  --white:        #FFFFFF;
  --obsidian:     #0A0A0A;
  --apple-slate:  #1D1D1F;
  --signal-red:   #E8001C;
  --system-gray:  #F5F5F7;
  --mid-gray:     #6E6E73;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  /* Type scale */
  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;
  --text-4xl:   2.25rem;
  --text-5xl:   3rem;
  --text-hero:  clamp(3.5rem, 8vw, 7rem);

  /* Spacing */
  --section-pad: clamp(5rem, 10vw, 9rem);

  /* Borders & Radius */
  --radius-sm:  10px;
  --radius-md:  16px;
  --radius-lg:  20px;
  --radius-xl:  24px;
  --radius-pill: 999px;

  /* Transitions */
  --ease-out:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --t-fast:     150ms;
  --t-base:     250ms;
  --t-slow:     400ms;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 8px 24px rgba(0,0,0,0.12);
  --shadow-dark: 0 20px 60px rgba(0,0,0,0.5);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--obsidian);
  overflow-x: hidden;
  position: relative;
}

/* Global noise overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23noise)'/%3E%3C/svg%3E");
}

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

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

/* Section dividers */
section + section {
  border-top: 1px solid rgba(0,0,0,0.07);
}

/* ============================================================
   3. TYPOGRAPHY HELPERS
   ============================================================ */
.label-mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid-gray);
}

.label-mono--red {
  color: var(--signal-red);
}

.display-heading {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--obsidian);
}

/* ============================================================
   4. BUTTON SYSTEM
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--t-base) var(--ease-out),
              box-shadow var(--t-base) var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  transform: translateX(-101%);
  transition: transform var(--t-base) var(--ease-out);
  border-radius: var(--radius-pill);
}

.btn:hover {
  transform: scale(1.02);
}

.btn:hover::before {
  transform: translateX(0);
}

/* Filled — Signal Red */
.btn--filled {
  background: var(--signal-red);
  color: var(--white);
}

/* Outlined — Signal Red */
.btn--outline {
  background: transparent;
  color: var(--signal-red);
  border: 1.5px solid var(--signal-red);
}

.btn--outline::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--signal-red);
  transform: translateX(-101%);
  transition: transform var(--t-base) var(--ease-out);
  border-radius: var(--radius-pill);
  z-index: -1;
}

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

.btn--outline:hover::after {
  transform: translateX(0);
}

/* ============================================================
   5. NAVBAR
   ============================================================ */
#navbar {
  position: fixed;
  top: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 2rem);
  max-width: 960px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem 0.75rem 1.5rem;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: var(--radius-pill);
  transition: box-shadow var(--t-base) var(--ease-out);
}

#navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--obsidian);
  text-transform: uppercase;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--apple-slate);
  transition: color var(--t-fast);
}

.nav-links a:hover {
  color: var(--obsidian);
}

.nav-cta {
  flex-shrink: 0;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.25rem;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--obsidian);
  border-radius: 2px;
  transition: transform var(--t-base) var(--ease-out),
              opacity var(--t-base);
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile drawer */
.nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  padding: 5rem 2rem 2rem;
  z-index: 999;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
  transform: translateY(-100%);
  transition: transform var(--t-slow) var(--ease-out);
}

.nav-drawer.open {
  transform: translateY(0);
}

.nav-drawer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.nav-drawer ul a {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--obsidian);
}

/* ============================================================
   6. HERO SECTION
   ============================================================ */
#hero {
  height: 100dvh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  position: relative;
  overflow: hidden;
}

.hero-dot-grid {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  pointer-events: none;
  animation: drift-up 12s linear infinite;
}

@keyframes drift-up {
  from { transform: translateY(0); }
  to   { transform: translateY(-20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
  padding: 0 2rem;
  text-align: center;
  margin-top: -5vh;
}

.hero-label {
  display: block;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--signal-red);
  opacity: 0;
}

.hero-line-1,
.hero-line-2 {
  font-size: var(--text-hero);
  line-height: 1.0;
  display: block;
  opacity: 0;
}

.hero-line-1 {
  color: var(--obsidian);
  margin-bottom: 0.1em;
}

.hero-line-2 {
  color: var(--obsidian);
  margin-bottom: 1rem;
}

.hero-line-2 .accent {
  color: var(--signal-red);
}

.hero-sub {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 400;
  color: var(--mid-gray);
  margin-bottom: 2.5rem;
  opacity: 0;
}

.hero-cta {
  opacity: 0;
}

/* ============================================================
   7. PROOF POINT SECTION
   ============================================================ */
#proof {
  background: var(--obsidian);
  padding: var(--section-pad) clamp(1.5rem, 6vw, 6rem);
}

.proof-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.proof-label {
  display: block;
  margin-bottom: 2rem;
  color: var(--mid-gray);
}

.proof-stat-line {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.05;
  color: var(--white);
  letter-spacing: -0.02em;
}

.proof-stat-line + .proof-stat-line {
  margin-top: 0.1em;
  margin-bottom: 1.75rem;
}

.proof-stat-number {
  color: var(--signal-red);
}

.proof-body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--mid-gray);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  max-width: 42ch;
}

.proof-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--mid-gray);
}

.proof-badge::before {
  content: '';
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal-red);
  flex-shrink: 0;
}

/* Screenshot showcase */
.screenshot-showcase {
  position: relative;
  background: var(--apple-slate);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
}

.screenshot-showcase:hover .screenshot-rear {
  transform: rotate(-3deg) translateX(-18px) translateY(-10px);
}

.screenshot-rear {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  opacity: 0.5;
  border-radius: 12px;
  overflow: hidden;
  transform: rotate(-5deg) translateX(-24px) translateY(-12px);
  transition: transform 300ms var(--ease-out);
}

.screenshot-rear img {
  width: 100%;
  height: auto;
  border-radius: 12px;
}

.screenshot-front {
  position: relative;
  z-index: 1;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-dark);
}

.screenshot-front img {
  width: 100%;
  height: auto;
  border-radius: 12px;
}

/* ============================================================
   8. WHAT WE DO SECTION
   ============================================================ */
#approach {
  background: var(--white);
  padding: var(--section-pad) clamp(1.5rem, 6vw, 6rem);
}

.approach-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.approach-header {
  margin-bottom: 4rem;
}

.approach-headline {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-top: 1rem;
}

.approach-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.approach-col {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  transition: background var(--t-base) var(--ease-out);
  cursor: default;
}

.approach-col:hover {
  background: var(--system-gray);
}

.approach-col-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--obsidian);
  margin-bottom: 0.75rem;
}

.approach-rule {
  height: 2px;
  background: var(--signal-red);
  width: 100%;
  margin-bottom: 1rem;
}

.approach-col-body {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--apple-slate);
  line-height: 1.65;
}

.approach-retainer {
  text-align: center;
  margin-top: 4rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--mid-gray);
}

/* ============================================================
   9. CLIENT LOGOS SECTION
   ============================================================ */
#clients {
  background: var(--system-gray);
  padding: 4rem 0;
  overflow: hidden;
  border-top: 1px solid rgba(0,0,0,0.07);
}

.clients-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.marquee-wrapper {
  position: relative;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
}

@media (max-width: 768px) {
  .marquee-track {
    animation-duration: 38s;
  }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.marquee-set {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.marquee-item {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--obsidian);
  padding: 0 0.5rem;
  transition: color var(--t-fast);
  cursor: default;
  letter-spacing: 0.02em;
}

.marquee-item:hover {
  color: var(--signal-red);
}

.marquee-dot {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--signal-red);
  padding: 0 0.25rem;
  font-size: 1.1rem;
  user-select: none;
}

/* ============================================================
   10. FOOTER
   ============================================================ */
#footer {
  background: var(--obsidian);
  border-radius: 2rem 2rem 0 0;
  padding: 5rem 2rem 3rem;
  text-align: center;
}

.footer-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--white);
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 0.5rem;
}

.footer-domain {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--mid-gray);
  display: block;
  margin-bottom: 2.5rem;
}

.footer-strip {
  margin-top: 4rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid-gray);
  opacity: 0.6;
}

/* ============================================================
   11. CONTACT MODAL
   ============================================================ */
#modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,10,10,0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-card {
  background: var(--white);
  border-radius: 1.5rem;
  max-width: 440px;
  width: 100%;
  padding: 2.5rem;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--mid-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--t-fast), transform var(--t-fast);
  padding: 0.25rem;
  line-height: 1;
}

.modal-close:hover {
  color: var(--signal-red);
  transform: translateY(-1px);
}

.modal-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid-gray);
  margin-bottom: 0.5rem;
}

.modal-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-2xl);
  color: var(--obsidian);
  margin-bottom: 2rem;
}

.form-field {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid-gray);
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--obsidian);
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color var(--t-base),
              box-shadow var(--t-base);
  resize: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--signal-red);
  box-shadow: 0 0 0 3px rgba(232,0,28,0.12);
}

.form-error {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--mid-gray);
  margin-top: 0.75rem;
  display: none;
}

/* Modal success state */
.modal-success {
  display: none;
  text-align: center;
  padding: 1rem 0;
}

.modal-success-label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--obsidian);
  margin-bottom: 0.75rem;
}

.modal-success-sub {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--mid-gray);
  margin-bottom: 1.25rem;
}

.modal-success-rule {
  height: 2px;
  background: var(--signal-red);
  width: 40%;
  margin: 0 auto;
}

/* ============================================================
   12. CARD HOVER SYSTEM (shared)
   ============================================================ */
.card-hover {
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-out),
              box-shadow var(--t-base) var(--ease-out),
              border-color var(--t-base);
}

.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232,0,28,0.15);
}

/* ============================================================
   13. RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 900px) {
  .proof-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .proof-body {
    max-width: 100%;
  }

  .approach-columns {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-drawer {
    display: block;
  }

  #navbar {
    top: 0.75rem;
    width: calc(100% - 1.5rem);
  }

  .screenshot-showcase {
    margin-top: 2rem;
  }

  .screenshot-rear {
    transform: rotate(-4deg) translateX(-16px) translateY(-8px);
  }
}

/* ============================================================
   14. SCROLL ANIMATION INITIAL STATES
   (Elements start hidden — GSAP reveals them)
   ============================================================ */
.gsap-fade-up {
  opacity: 0;
  transform: translateY(30px);
}