/* ==========================================================================
   DELLING ADVISORY — Main Stylesheet
   Colour palette: White / Deep Charcoal / Amber Gold (#C8911A)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Google Fonts Import
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --------------------------------------------------------------------------
   2. CSS Custom Properties (easy to update)
   -------------------------------------------------------------------------- */
:root {
  /* Colours */
  --color-white:        #FFFFFF;
  --color-bg:           #FFFFFF;
  --color-grey-lightest:#F7F7F8;
  --color-grey-light:   #EFEFEF;
  --color-grey-mid:     #9CA3AF;
  --color-grey-dark:    #4B5563;
  --color-charcoal:     #1C1C1E;        /* primary dark tone */
  --color-charcoal-deep:#111111;        /* deepest dark, footer */
  --color-text:         #1C1C1E;
  --color-text-muted:   #6B7280;

  /* Amber gold — matched to Delling Advisory logo */
  --color-accent:       #C8911A;
  --color-accent-hover: #A87510;
  --color-accent-light: #FDF6E8;        /* warm amber tint for light backgrounds */

  /* Typography */
  --font:               'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --nav-height:         72px;
  --max-width:          1200px;
  --section-v:          96px;
  --section-v-sm:       56px;

  /* Borders & Radius */
  --radius-sm:          6px;
  --radius:             12px;
  --radius-lg:          20px;

  /* Shadows */
  --shadow-sm:          0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow:             0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:          0 12px 40px rgba(0,0,0,0.14);

  /* Transitions */
  --transition:         0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: var(--font); cursor: pointer; border: none; background: none; }

/* --------------------------------------------------------------------------
   4. Typography Scale
   -------------------------------------------------------------------------- */
.display {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-charcoal);
}

h1, .h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--color-charcoal);
}

h2, .h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-charcoal);
}

h3, .h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--color-charcoal);
}

h4, .h4 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-charcoal);
}

p { max-width: 68ch; }
p + p { margin-top: 1em; }

.lead {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-grey-dark);
}

.label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.text-muted { color: var(--color-text-muted); }

/* --------------------------------------------------------------------------
   5. Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 768px) {
  .container { padding: 0 40px; }
}

@media (min-width: 1280px) {
  .container { padding: 0 60px; }
}

section { padding: var(--section-v) 0; }
section.tight { padding: var(--section-v-sm) 0; }

.section-header {
  margin-bottom: 56px;
}

.section-header .label {
  margin-bottom: 12px;
  display: block;
}

.section-header h2 {
  max-width: 20ch;
}

.section-header p {
  margin-top: 16px;
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 55ch;
}

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

.section-header.centered h2,
.section-header.centered p {
  margin-left: auto;
  margin-right: auto;
}

/* --------------------------------------------------------------------------
   6. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-charcoal);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-charcoal-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-accent:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(200, 145, 26, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-charcoal);
  border: 2px solid var(--color-charcoal);
}
.btn-outline:hover {
  background: var(--color-charcoal);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.05rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* --------------------------------------------------------------------------
   7. Navigation
   -------------------------------------------------------------------------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-nav.scrolled {
  border-color: var(--color-grey-light);
  box-shadow: var(--shadow-sm);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-charcoal);
  flex-shrink: 0;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-logo-text .logo-main {
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.nav-logo-text .logo-sub {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-grey-dark);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-charcoal);
  background: var(--color-grey-lightest);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-charcoal);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile nav */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 999;
  padding: 24px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

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

.nav-mobile a {
  display: block;
  padding: 16px 20px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-charcoal);
  border-radius: var(--radius-sm);
  border-bottom: 1px solid var(--color-grey-light);
  transition: background var(--transition);
}

.nav-mobile a:hover { background: var(--color-grey-lightest); }

.nav-mobile .btn {
  margin-top: 16px;
  justify-content: center;
  width: 100%;
}

/* Page offset for fixed nav */
.page-content { padding-top: var(--nav-height); }

@media (max-width: 880px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
}

/* --------------------------------------------------------------------------
   8. Hero Sections
   -------------------------------------------------------------------------- */
.hero {
  padding: 100px 0 80px;
  background: var(--color-charcoal);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 50%, rgba(200,145,26,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero .label { color: rgba(255,255,255,0.55); margin-bottom: 20px; display: block; }

.hero .display { color: var(--color-white); margin-bottom: 28px; }

.hero .lead {
  color: rgba(255,255,255,0.72);
  max-width: 54ch;
  margin-bottom: 44px;
}

/* Accent bar under page titles */
.page-hero {
  padding: 80px 0 72px;
  background: var(--color-charcoal);
  color: var(--color-white);
}

.page-hero .label {
  color: rgba(255,255,255,0.5);
  display: block;
  margin-bottom: 16px;
}

.page-hero h1 { color: var(--color-white); }

.page-hero p {
  margin-top: 20px;
  font-size: 1.2rem;
  color: rgba(255,255,255,0.7);
  max-width: 52ch;
}

/* --------------------------------------------------------------------------
   9. Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-grey-light);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.card:hover {
  box-shadow: var(--shadow);
  border-color: transparent;
  transform: translateY(-3px);
}

.card-grid {
  display: grid;
  gap: 24px;
}

.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 1024px) {
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .card-grid-3, .card-grid-2 { grid-template-columns: 1fr; }
}

/* Service icon */
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--color-accent);
}

.card-icon svg { width: 24px; height: 24px; }

/* Dark card */
.card-dark {
  background: var(--color-charcoal);
  border-color: transparent;
  color: var(--color-white);
}
.card-dark h3, .card-dark h4 { color: var(--color-white); }
.card-dark p { color: rgba(255,255,255,0.7); }
.card-dark .card-icon { background: rgba(255,255,255,0.08); color: var(--color-white); }

/* --------------------------------------------------------------------------
   10. Divider / Decorative Elements
   -------------------------------------------------------------------------- */
.accent-bar {
  display: block;
  width: 48px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 2px;
  margin-bottom: 24px;
}

.accent-bar.centered { margin: 0 auto 24px; }

hr.divider {
  border: none;
  border-top: 1px solid var(--color-grey-light);
  margin: 0;
}

/* --------------------------------------------------------------------------
   11. Backgrounds / Bands
   -------------------------------------------------------------------------- */
.bg-grey { background: var(--color-grey-lightest); }
.bg-dark  { background: var(--color-charcoal); color: var(--color-white); }
.bg-dark  h2, .bg-dark h3 { color: var(--color-white); }
.bg-dark  p  { color: rgba(255,255,255,0.7); }
.bg-dark  .label { color: rgba(255,255,255,0.45); }
.bg-dark  .section-header p { color: rgba(255,255,255,0.65); }

/* --------------------------------------------------------------------------
   12. Stat Row
   -------------------------------------------------------------------------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px 32px;
}

.stat-item { }
.stat-number {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-charcoal);
  margin-bottom: 8px;
}
.bg-dark .stat-number { color: var(--color-white); }
.stat-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.bg-dark .stat-label { color: rgba(255,255,255,0.55); }
.stat-accent { color: var(--color-accent); }

@media (max-width: 768px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --------------------------------------------------------------------------
   13. Two-Column Layout
   -------------------------------------------------------------------------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px 80px;
  align-items: start;
}

.two-col.align-center { align-items: center; }

.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }

@media (max-width: 900px) {
  .two-col, .two-col.reverse { grid-template-columns: 1fr; gap: 40px; direction: ltr; }
}

/* --------------------------------------------------------------------------
   14. Testimonials
   -------------------------------------------------------------------------- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 640px) {
  .testimonial-grid { grid-template-columns: 1fr; }
}

.testimonial-card {
  background: var(--color-white);
  border: 1px solid var(--color-grey-light);
  border-radius: var(--radius);
  padding: 36px 32px;
}

.testimonial-card blockquote {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--color-text);
  font-style: italic;
  position: relative;
  padding-left: 20px;
  border-left: 3px solid var(--color-accent);
  margin-bottom: 24px;
  max-width: 100%;
}

.testimonial-card cite {
  display: flex;
  flex-direction: column;
  font-style: normal;
}

.testimonial-card .cite-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-charcoal);
}

.testimonial-card .cite-role {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   15. Client Logos
   -------------------------------------------------------------------------- */
.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 2px;
  border: 1px solid var(--color-grey-light);
  border-radius: var(--radius);
  overflow: hidden;
}

.client-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  border: 1px solid var(--color-grey-light);
  min-height: 80px;
  transition: background var(--transition);
}

.client-cell:hover { background: var(--color-grey-lightest); }

.client-cell img {
  max-height: 40px;
  width: auto;
  filter: grayscale(1) opacity(0.6);
  transition: filter var(--transition);
}

.client-cell:hover img { filter: grayscale(0) opacity(1); }

.client-cell .client-name-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-grey-dark);
  text-align: center;
  transition: color var(--transition);
}

.client-cell:hover .client-name-text { color: var(--color-charcoal); }

/* --------------------------------------------------------------------------
   16. CTA Band
   -------------------------------------------------------------------------- */
.cta-band {
  padding: 80px 0;
  background: var(--color-charcoal);
  color: var(--color-white);
  text-align: center;
}

.cta-band h2 {
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-band p {
  color: rgba(255,255,255,0.68);
  font-size: 1.1rem;
  margin: 0 auto 36px;
  max-width: 50ch;
}

/* --------------------------------------------------------------------------
   17. Contact Form & Info
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px 80px;
  align-items: start;
}

@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 28px;
}

.contact-info-item:last-child { margin-bottom: 0; }

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-grey-lightest);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-accent);
}

.contact-icon svg { width: 20px; height: 20px; }

.contact-info-text .info-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-info-text a {
  color: var(--color-charcoal);
  font-weight: 500;
  transition: color var(--transition);
}

.contact-info-text a:hover { color: var(--color-accent); }

/* Form */
.form-field {
  margin-bottom: 20px;
}

.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-grey-dark);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  border: 1.5px solid var(--color-grey-light);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 145, 26, 0.15);
}

.form-field textarea { resize: vertical; min-height: 140px; }

.form-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 12px;
}

/* --------------------------------------------------------------------------
   18. About Page
   -------------------------------------------------------------------------- */
.about-hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}

@media (max-width: 768px) {
  .about-hero-inner { grid-template-columns: 1fr; }
}

.profile-photo-wrap {
  width: 260px;
  height: 320px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 3px solid rgba(255,255,255,0.12);
  flex-shrink: 0;
  background: var(--color-charcoal-deep);
}

.profile-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 38% 5%;
  display: block;
}

.profile-photo-placeholder {
  font-size: 4rem;
  color: rgba(255,255,255,0.2);
}

.credential-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (max-width: 640px) {
  .credential-grid { grid-template-columns: 1fr; }
}

.credential-item {
  border: 1px solid var(--color-grey-light);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
}

.credential-item .cred-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.credential-item .cred-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   19. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-charcoal-deep);
  color: rgba(255,255,255,0.6);
  padding: 56px 0 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

.footer-brand .nav-logo { color: var(--color-white); margin-bottom: 16px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 36ch; }

.footer-col h5 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.88rem;
  padding: 5px 0;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p { font-size: 0.8rem; max-width: none; }

.footer-abn { font-size: 0.78rem; color: rgba(255,255,255,0.3); }

/* --------------------------------------------------------------------------
   20. Utilities
   -------------------------------------------------------------------------- */
.mt-4  { margin-top: 16px; }
.mt-6  { margin-top: 24px; }
.mt-8  { margin-top: 32px; }
.mt-10 { margin-top: 40px; }
.mb-4  { margin-bottom: 16px; }
.mb-6  { margin-bottom: 24px; }
.mb-8  { margin-bottom: 32px; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Fade-in animation */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive helpers */
@media (max-width: 768px) {
  :root { --section-v: 64px; --section-v-sm: 40px; }
  .btn-lg { padding: 15px 24px; font-size: 0.95rem; }
  .section-header { margin-bottom: 40px; }
}