/* ==========================================================================
   Berna Tamer — Modern Executive Design System
   Emerald & Forest Green Palette with Editorial Aesthetics
   ========================================================================== */

:root {
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Color System: Deep Forest Greens, Sage Accents, Ivory Whites */
  --color-primary: #0f382c;        /* Deepest Emerald Forest */
  --color-primary-dark: #08231b;   /* Near Black Green */
  --color-primary-light: #1b5240;  /* Rich Pine */
  --color-accent: #2d6a4f;         /* Balanced Sage/Forest */
  --color-accent-light: #52b788;   /* Vibrant Mint Green */
  --color-accent-pale: #e8f5ed;    /* Soft Mint Tint */
  --color-gold: #c5a059;           /* Elegant Warm Gold Accent */
  --color-gold-light: #f7f3e8;     /* Ivory Gold Glow */
  
  --color-bg: #ffffff;
  --color-bg-alt: #f6f9f7;         /* Subtle Green-White Neutral */
  --color-bg-dark: #0a1f18;        /* Ultra-dark Forest */
  
  --color-text-main: #192a24;
  --color-text-muted: #52665e;
  --color-text-light: #8ba096;
  --color-white: #ffffff;
  
  --border-color: #e2ece6;
  --border-color-dark: #1f3d32;
  
  --shadow-sm: 0 2px 8px rgba(15, 56, 44, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 56, 44, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 56, 44, 0.12);
  --shadow-hover: 0 20px 48px rgba(15, 56, 44, 0.16);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --container-max: 1240px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 4.5vw, 3.8rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.2vw, 1.8rem); }
h4 { font-size: 1.2rem; }

p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.lead {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Badges & Pills */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.1rem;
  background-color: var(--color-accent-pale);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
  border: 1px solid rgba(45, 106, 79, 0.18);
  margin-bottom: 1.2rem;
}

.badge-pill.dark {
  background: rgba(82, 183, 136, 0.15);
  color: var(--color-accent-light);
  border-color: rgba(82, 183, 136, 0.3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  font-family: var(--font-sans);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--color-white);
}

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

.btn-secondary:hover {
  background-color: var(--color-accent-pale);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-outline-light {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

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

.btn-accent {
  background-color: var(--color-gold);
  color: var(--color-primary-dark);
  font-weight: 700;
}

.btn-accent:hover {
  background-color: #d6b26b;
  transform: translateY(-2px);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.brand-tag {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  margin-top: 3px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-main);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--color-primary);
  cursor: pointer;
}

/* Sections */
.section {
  padding: 5.5rem 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-white);
}

.section-dark h1, .section-dark h2, .section-dark h3 {
  color: var(--color-white);
}

.section-dark p {
  color: #a3b8af;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-header h2 {
  margin-bottom: 1rem;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, #0a251c 0%, #0f382c 60%, #164637 100%);
  color: var(--color-white);
  padding: 6.5rem 0 5.5rem 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(82, 183, 136, 0.15) 0%, rgba(15, 56, 44, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: 1.4rem;
}

.hero-content p {
  color: #c4d7cd;
  font-size: 1.15rem;
  margin-bottom: 2rem;
}

.hero-cta-group {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-card-wrap {
  position: relative;
}

.hero-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.hero-card-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 1.2rem;
  margin-bottom: 1.5rem;
}

.hero-card-title {
  color: var(--color-accent-light);
  font-size: 1.3rem;
  font-weight: 600;
}

.hero-card-features {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon-box {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(82, 183, 136, 0.2);
  color: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.feature-text h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.feature-text p {
  color: #a3b8af;
  font-size: 0.88rem;
  margin: 0;
}

/* Stats Bar */
.stats-bar {
  background-color: var(--color-bg-alt);
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

/* Pillar & Service Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-accent-light);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-pale);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.4rem;
}

.card h3 {
  margin-bottom: 0.8rem;
  font-size: 1.4rem;
}

.card p {
  font-size: 0.96rem;
  line-height: 1.6;
}

.card-checklist {
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px dashed var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.card-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.card-checklist li i {
  color: var(--color-accent);
  margin-top: 3px;
  font-size: 0.85rem;
}

/* Quote Section */
.quote-banner {
  background: linear-gradient(135deg, #0d3226 0%, #154536 100%);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.quote-banner blockquote {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-style: italic;
  line-height: 1.5;
  color: #f1f7f4;
  margin-bottom: 1.2rem;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

.quote-banner cite {
  font-size: 1rem;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  font-weight: 700;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 2rem;
  border-left: 2px solid var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 1.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.35rem;
  top: 0.2rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
}

.timeline-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

/* Case Study Blocks */
.case-card {
  background: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  margin-bottom: 2rem;
  transition: var(--transition);
}

.case-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.case-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.case-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--color-accent-pale);
  color: var(--color-primary);
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-full);
}

.case-client {
  font-size: 0.88rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.case-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border-color);
}

.case-detail-box h5 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.case-detail-box p {
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0;
}

/* Comparison Table */
.table-responsive {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-white);
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.custom-table th {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 1.1rem 1.4rem;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: var(--font-sans);
}

.custom-table td {
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.94rem;
  color: var(--color-text-main);
}

.custom-table tr:nth-child(even) {
  background-color: #fafdfb;
}

.custom-table tr:hover {
  background-color: var(--color-accent-pale);
}

/* Insight / Blog Cards */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 2rem;
}

.article-card {
  background: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 0.8rem;
}

.article-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.8rem;
  line-height: 1.35;
}

.article-card p {
  font-size: 0.95rem;
  margin-bottom: 1.4rem;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent);
}

.read-more:hover {
  color: var(--color-primary);
  gap: 0.7rem;
}

/* Article Detail */
.article-header {
  background: linear-gradient(135deg, #0d3226 0%, #174d3d 100%);
  color: var(--color-white);
  padding: 5rem 0;
  text-align: center;
}

.article-header h1 {
  color: var(--color-white);
  max-width: 900px;
  margin: 1rem auto;
}

.article-content {
  max-width: 800px;
  margin: 3.5rem auto;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text-main);
}

.article-content h2, .article-content h3 {
  margin: 2rem 0 1rem 0;
}

.article-content p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.article-content ul, .article-content ol {
  margin: 1.5rem 0;
  padding-left: 2rem;
}

.article-content li {
  margin-bottom: 0.6rem;
  list-style: disc;
}

/* Contact Grid & Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 3.5rem;
}

.contact-info-card {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.8rem;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-text h5 {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.contact-text p {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0;
}

.contact-form {
  background: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-primary);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text-main);
  background-color: #fafdfb;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(82, 183, 136, 0.2);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

/* FAQ Accordion */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  overflow: hidden;
}

.faq-question {
  padding: 1.2rem 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fafcfb;
}

.faq-answer {
  padding: 1.2rem 1.5rem;
  border-top: 1px solid var(--border-color);
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-dark);
  color: var(--color-white);
  padding: 4.5rem 0 2rem 0;
  border-top: 1px solid var(--border-color-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand h3 {
  color: var(--color-white);
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  color: #9cb3a8;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-col h4 {
  color: var(--color-white);
  font-size: 1.05rem;
  margin-bottom: 1.2rem;
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: #9cb3a8;
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: var(--color-accent-light);
  transform: translateX(3px);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #799487;
  font-size: 0.85rem;
}

.footer-bottom a {
  color: #799487;
}

.footer-bottom a:hover {
  color: var(--color-accent-light);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .case-details-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    flex-direction: column;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--border-color);
  }
  .main-nav.show {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
}