/* =============================================
   LeadIQue Consulting — Design Tokens & Styles
   ============================================= */

:root {
  /* 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);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* 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;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;

  /* Fonts */
  --font-display: 'Clash Display', 'Arial Black', sans-serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
}

/* ===== LIGHT MODE (default) ===== */
:root, [data-theme="light"] {
  --color-bg:             #fafaf8;
  --color-surface:        #ffffff;
  --color-surface-2:      #f5f4f0;
  --color-surface-offset: #edecea;
  --color-divider:        #ddd9d2;
  --color-border:         #c8c4bd;

  --color-text:           #1a1a2e;
  --color-text-muted:     #5c5b6f;
  --color-text-faint:     #9e9da8;
  --color-text-inverse:   #fafaf8;

  --color-primary:        #b8860b;
  --color-primary-hover:  #9a7009;
  --color-primary-active: #7d5b07;

  --color-navy:           #1a1a2e;
  --color-navy-light:     #2d2d4a;

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.12);
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --color-bg:             #0f0f1a;
  --color-surface:        #16162a;
  --color-surface-2:      #1c1c34;
  --color-surface-offset: #22223a;
  --color-divider:        #2a2a42;
  --color-border:         #3a3a52;

  --color-text:           #e8e7e3;
  --color-text-muted:     #9b9aad;
  --color-text-faint:     #5e5d6f;
  --color-text-inverse:   #0f0f1a;

  --color-primary:        #d4a017;
  --color-primary-hover:  #e0b020;
  --color-primary-active: #eac030;

  --color-navy:           #e8e7e3;
  --color-navy-light:     #c8c7c0;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0f0f1a;
    --color-surface:        #16162a;
    --color-surface-2:      #1c1c34;
    --color-surface-offset: #22223a;
    --color-divider:        #2a2a42;
    --color-border:         #3a3a52;
    --color-text:           #e8e7e3;
    --color-text-muted:     #9b9aad;
    --color-text-faint:     #5e5d6f;
    --color-text-inverse:   #0f0f1a;
    --color-primary:        #d4a017;
    --color-primary-hover:  #e0b020;
    --color-primary-active: #eac030;
    --color-navy:           #e8e7e3;
    --color-navy-light:     #c8c7c0;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  }
}

/* ===== GLOBAL ===== */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
a:hover { color: var(--color-primary-hover); }

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.header__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.header__logo svg {
  width: 36px;
  height: 36px;
}

.header__wordmark {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.header__wordmark span {
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.header__nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition-interactive);
}
.header__nav-links a:hover { color: var(--color-text); }

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
  cursor: pointer;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--primary:active {
  transform: translateY(0);
  background: var(--color-primary-active);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--outline:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-text-muted);
  color: var(--color-text);
  transform: translateY(-1px);
}
.btn--outline:active {
  transform: translateY(0);
}

.btn--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-sm);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    oklch(0.12 0.02 260 / 0.88) 0%,
    oklch(0.15 0.02 260 / 0.7) 50%,
    oklch(0.2 0.03 80 / 0.5) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-32) var(--space-6) var(--space-20);
}

.hero__label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  padding: var(--space-2) var(--space-4);
  border: 1px solid oklch(from var(--color-primary) l c h / 0.3);
  border-radius: var(--radius-full);
  background: oklch(from var(--color-primary) l c h / 0.08);
}

[data-theme="dark"] .hero__label {
  color: var(--color-primary);
  border-color: oklch(from var(--color-primary) l c h / 0.3);
  background: oklch(from var(--color-primary) l c h / 0.08);
}

.hero__heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: #f0efe8;
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 14ch;
  margin-bottom: var(--space-6);
}

.hero__heading em {
  font-style: normal;
  color: var(--color-primary);
}

[data-theme="dark"] .hero__heading em {
  color: var(--color-primary);
}

.hero__subheading {
  font-size: var(--text-base);
  color: #c8c7c0;
  max-width: 48ch;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero__cta-group {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero .btn--outline {
  color: #e8e7e3;
  border-color: oklch(1 0 0 / 0.25);
}
.hero .btn--outline:hover {
  background: oklch(1 0 0 / 0.1);
  border-color: oklch(1 0 0 / 0.4);
  color: #fff;
}

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

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

.section__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section__heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 58ch;
  margin-bottom: var(--space-12);
}

/* ===== SERVICES ===== */
.services {
  background: var(--color-surface-2);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .services__grid {
    grid-template-columns: 1fr 1fr;
  }
  .services__grid .service-card:first-child {
    grid-row: 1 / 3;
  }
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  flex-shrink: 0;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.service-card__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.service-card__tag {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.08);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

/* ===== APPROACH ===== */
.approach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  counter-reset: step;
}

@media (min-width: 768px) {
  .approach__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.approach-step {
  position: relative;
  padding-top: var(--space-12);
}

.approach-step::before {
  content: counter(step);
  counter-increment: step;
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: oklch(from var(--color-primary) l c h / 0.15);
  line-height: 1;
}

.approach-step__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.approach-step__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== ABOUT ===== */
.about__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .about__layout {
    grid-template-columns: 1fr 1fr;
  }
}

.about__image-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.about__image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about__text-content { }

.about__text-content p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.about__credentials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.credential {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.credential svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ===== TESTIMONIAL ===== */
.testimonial {
  background: var(--color-navy);
  color: #f0efe8;
  text-align: center;
}

[data-theme="dark"] .testimonial {
  background: var(--color-surface-2);
}

.testimonial__quote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.4;
  max-width: 40ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  color: #f0efe8;
}

[data-theme="dark"] .testimonial__quote {
  color: var(--color-text);
}

.testimonial__quote::before {
  content: '\201C';
  display: block;
  font-size: var(--text-3xl);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.testimonial__attribution {
  font-size: var(--text-sm);
  color: #9b9aad;
}

/* ===== CTA ===== */
.cta {
  text-align: center;
}

.cta .section__heading {
  max-width: 22ch;
  margin-inline: auto;
  margin-bottom: var(--space-4);
}

.cta .section__desc {
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.cta__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ===== CONTACT ===== */
.contact {
  background: var(--color-surface-2);
}

.contact__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 768px) {
  .contact__layout {
    grid-template-columns: 1fr 1fr;
  }
}

.contact__info h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.contact__info p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.contact__detail svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.15);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ===== FOOTER ===== */
.footer {
  padding: var(--space-12) var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.footer__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
}

.footer__links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.footer__links a:hover { color: var(--color-text); }

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

.reveal-up {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .reveal-up {
    clip-path: inset(100% 0 0 0);
    animation: reveal-clip linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}

@keyframes reveal-clip {
  to { clip-path: inset(0 0 0 0); }
}

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}
.mobile-nav a:hover { color: var(--color-primary); }

.mobile-nav__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header__nav-links { display: none; }
  .mobile-menu-btn { display: flex; }

  .header__inner {
    padding: var(--space-3) var(--space-4);
  }

  .header .btn--primary {
    display: none;
  }

  .header__logo svg {
    width: 28px;
    height: 28px;
  }

  .header__wordmark {
    font-size: var(--text-base);
  }

  .hero {
    min-height: 85vh;
  }

  .hero__content {
    padding: var(--space-20) var(--space-4) var(--space-12);
  }

  .hero__heading {
    font-size: var(--text-2xl);
  }

  .hero__cta-group {
    flex-direction: column;
  }

  .hero__cta-group .btn {
    text-align: center;
  }

  .section__heading {
    font-size: var(--text-xl);
  }

  .about__layout {
    gap: var(--space-8);
  }

  .about__credentials {
    flex-direction: column;
    gap: var(--space-3);
  }
}