/* style.css — TDC Landing Page: "Quiet Authority" */

/* ========================================
   DESIGN TOKENS
   ======================================== */
:root {
  /* Color Palette */
  --color-primary: #1A2E22;
  --color-bg: #F5F0E8;
  --color-accent: #A07848;
  --color-off-white: #FAF8F5;
  --color-text: #1A2E22;
  --color-text-muted: #6B6355;
  --color-text-on-dark: #F5F0E8;

  /* Typography */
  --font-display: 'EB Garamond', Georgia, serif;
  --font-body: 'Work Sans', 'Helvetica Neue', Arial, sans-serif;

  /* Type Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --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;
  --space-32: 8rem;

  /* Content Widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}


/* ========================================
   LAYOUT UTILITIES
   ======================================== */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--space-12);
  }
}


/* ========================================
   SKIP LINK
   ======================================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  text-decoration: none;
  z-index: 200;
  transition: top 0.2s var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
}


/* ========================================
   SCROLL ANIMATIONS
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }


/* ========================================
   HEADER / NAV
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: background 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out), backdrop-filter 0.4s var(--ease-out);
}

.header--scrolled {
  background: rgba(245, 240, 232, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(26, 46, 34, 0.08);
}

/* Header text light on hero, dark after scroll */
.header .header__logo-text,
.header .header__link {
  transition: color 0.4s var(--ease-out);
}

.header:not(.header--scrolled) .header__logo-text {
  color: #F5F0E8;
}

.header:not(.header--scrolled) .header__link {
  color: rgba(245, 240, 232, 0.7);
}

.header:not(.header--scrolled) .header__link:hover {
  color: #F5F0E8;
}

.header:not(.header--scrolled) .header__logo-mark rect,
.header:not(.header--scrolled) .header__logo-mark path {
  fill: #F5F0E8;
  transition: fill 0.4s var(--ease-out);
}

.header:not(.header--scrolled) .hamburger__line {
  background: #F5F0E8;
}

.header:not(.header--scrolled) .header__cta {
  background: rgba(245, 240, 232, 0.15);
  border: 1px solid rgba(245, 240, 232, 0.3);
}

.header:not(.header--scrolled) .header__cta:hover {
  background: rgba(245, 240, 232, 0.25);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (min-width: 768px) {
  .header__inner {
    padding-inline: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .header__inner {
    padding-inline: var(--space-12);
  }
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-primary);
}

.header__logo-img {
  width: 112px;
  height: 112px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.footer__logo-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.header__logo-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

.header__nav {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .header__nav {
    display: flex;
  }
}

.header__link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.header__link:hover {
  color: var(--color-text);
}

.header__cta {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-on-dark);
  background: var(--color-primary);
  padding: var(--space-2) var(--space-5);
  text-decoration: none;
}

.header__cta:hover {
  background: #243D2E;
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
}

.hamburger__line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-primary);
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.hamburger.active .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 4.5rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: var(--space-8) var(--space-6);
  gap: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-menu__link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  text-decoration: none;
}

.mobile-menu__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-on-dark);
  background: var(--color-primary);
  padding: var(--space-4) var(--space-6);
  text-decoration: none;
  margin-top: var(--space-4);
}


/* ========================================
   SECTION: HERO
   ======================================== */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

/* Slideshow layer */
.hero__slideshow {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 1.8s ease-in-out, transform 6s ease-out;
  will-change: opacity, transform;
}

.hero__slide--active {
  opacity: 1;
  transform: scale(1);
}

/* Dark overlay for text readability */
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to bottom,
    rgba(26, 46, 34, 0.55) 0%,
    rgba(26, 46, 34, 0.65) 50%,
    rgba(26, 46, 34, 0.75) 100%
  );
}

/* Content on top */
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: var(--space-32) var(--space-6) var(--space-16);
}

.hero__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

.hero__heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  line-height: 1.08;
  color: #F5F0E8;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-8);
}

.hero__heading em {
  font-style: italic;
}

.hero__subtext {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: 1.7;
  color: rgba(245, 240, 232, 0.8);
  max-width: 540px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

/* Light button variant for dark hero background */
.btn-primary--light {
  background: rgba(245, 240, 232, 0.95);
  color: var(--color-primary);
}

.btn-primary--light:hover {
  background: #F5F0E8;
}

.btn-primary--light:active {
  background: rgba(245, 240, 232, 0.85);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-on-dark);
  background: var(--color-primary);
  padding: var(--space-4) var(--space-8);
  text-decoration: none;
  min-height: 52px;
  transition: background 0.3s var(--ease-out);
}

.btn-primary:hover {
  background: #243D2E;
}

.btn-primary:active {
  background: #0F1D14;
}

.hero__disclaimer {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: rgba(245, 240, 232, 0.5);
  margin-top: var(--space-6);
  letter-spacing: 0.01em;
}


/* ========================================
   SECTION: PROBLEM
   ======================================== */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) var(--space-6);
}

@media (min-width: 768px) {
  .section {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .section {
    padding-left: var(--space-12);
    padding-right: var(--space-12);
  }
}

.section__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}

.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-12);
}

.problem__grid {
  display: grid;
  gap: var(--space-12);
}

@media (min-width: 768px) {
  .problem__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
  }
}

.problem__text {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.problem__stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.stat {
  padding-left: var(--space-6);
  border-left: 2px solid var(--color-accent);
}

.stat__number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}

.stat__label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
}


/* ========================================
   SECTION: PROCESS (How It Works)
   ======================================== */
.section--off-white {
  background: var(--color-off-white);
}

.process__steps {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .process__steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .process__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
  }
}

.step {
  padding-top: var(--space-6);
}

.step__number {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.step__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.step__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 300;
  line-height: 1.65;
  color: var(--color-text-muted);
}


/* ========================================
   SECTION: DIFFERENTIATORS (What Sets Us Apart)
   ======================================== */
.diff__grid {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .diff__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }

  .diff__grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .diff__grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.diff__item {
  padding-top: var(--space-6);
  border-top: 2px solid var(--color-accent);
}

.diff__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.diff__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 300;
  line-height: 1.65;
  color: var(--color-text-muted);
}


/* ========================================
   SECTION: WHO WE WORK WITH
   ======================================== */
.section--dark {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
}

.section--dark .section-heading {
  color: var(--color-text-on-dark);
}

.audience__grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .audience__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

.audience__item {
  padding: var(--space-6);
  border: 1px solid rgba(245, 240, 232, 0.15);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: 1.6;
  color: rgba(245, 240, 232, 0.85);
}


/* ========================================
   SECTION: CTA (Close)
   ======================================== */
.cta-section {
  text-align: center;
  padding: clamp(var(--space-16), 8vw, var(--space-32)) var(--space-6);
  background: var(--color-bg);
}

.cta-section__inner {
  max-width: 580px;
  margin-inline: auto;
}

.cta-section .section-heading {
  margin-bottom: var(--space-6);
}

.cta-section__subtext {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
}

.cta-section__note {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-6);
  font-style: italic;
}


/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  padding: var(--space-12) var(--space-6) var(--space-8);
}

@media (min-width: 768px) {
  .footer {
    padding: var(--space-12) var(--space-8) var(--space-8);
  }
}

@media (min-width: 1024px) {
  .footer {
    padding: var(--space-12) var(--space-12) var(--space-8);
  }
}

.footer__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}

.footer__top {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(245, 240, 232, 0.12);
}

@media (min-width: 768px) {
  .footer__top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer__logo-mark {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.footer__logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text-on-dark);
}

.footer__tagline {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: rgba(245, 240, 232, 0.6);
  font-weight: 300;
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__contact-item {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: rgba(245, 240, 232, 0.6);
  text-decoration: none;
  font-weight: 300;
}

.footer__contact-item:hover {
  color: var(--color-text-on-dark);
}

.footer__bottom {
  padding-top: var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: rgba(245, 240, 232, 0.4);
  font-weight: 300;
  line-height: 1.6;
  max-width: none;
}


/* ========================================
   THIN DIVIDER LINE
   ======================================== */
.divider {
  width: 48px;
  height: 1px;
  background: var(--color-accent);
  margin-bottom: var(--space-8);
}

.divider--center {
  margin-inline: auto;
}