/* Mesüretim MES Landing Page Stylesheet - Ultra-lightweight & High Performance */
:root {
  --primary: #ff6000;
  --primary-hover: #e05300;
  --primary-light: #fff7ed;
  --primary-ring: rgba(255, 96, 0, 0.2);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  background-color: #ffffff;
  color: var(--slate-800);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  color: var(--slate-900);
  font-weight: 800;
  line-height: 1.2;
}

.text-hero {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--slate-900);
  line-height: 1.15;
}

.text-section-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  background-color: var(--primary-light);
  border: 1px solid rgba(255, 96, 0, 0.2);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  margin-bottom: 0.75rem;
}

.section-header-bar {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate-500);
  border-left: 4px solid var(--primary);
  padding-left: 0.75rem;
  margin-bottom: 0.75rem;
}

p {
  font-size: 0.9375rem;
  color: var(--slate-600);
  line-height: 1.6;
}

/* Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--slate-200);
  transition: box-shadow 0.2s;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px -5px rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--slate-900);
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-badge {
  background-color: var(--primary);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

@media (min-width: 900px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  color: var(--slate-600);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  transition: color 0.15s;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--slate-200);
  border-radius: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--slate-700);
  text-decoration: none;
  background: var(--slate-50);
  transition: all 0.15s;
}

.lang-switch:hover {
  background: var(--slate-100);
  border-color: var(--slate-300);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease-in-out;
  min-height: 2.75rem;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 96, 0, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 6px 20px rgba(255, 96, 0, 0.35);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--slate-800);
  border-color: var(--slate-200);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
  background-color: var(--slate-50);
  border-color: var(--slate-300);
}

.btn-portal {
  background-color: var(--slate-900);
  color: #ffffff;
  border-color: var(--slate-800);
}

.btn-portal:hover {
  background-color: var(--slate-950);
  color: #ffffff;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: none;
  border: 1px solid var(--slate-200);
  border-radius: 0.5rem;
  cursor: pointer;
  color: var(--slate-700);
}

@media (min-width: 900px) {
  .mobile-toggle {
    display: none;
  }
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 4.25rem;
  left: 0;
  right: 0;
  background: #ffffff;
  border-bottom: 1px solid var(--slate-200);
  padding: 1.5rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  z-index: 49;
}

.mobile-menu.active {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-list a {
  display: block;
  padding: 0.5rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--slate-800);
  text-decoration: none;
}

/* Hero Section */
.hero-section {
  padding: 4.5rem 0 3.5rem;
  background: radial-gradient(circle at 50% 0%, #fff7ed 0%, #ffffff 70%);
  border-bottom: 1px solid var(--slate-200);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.hero-trust-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--slate-200);
  font-size: 0.8125rem;
  color: var(--slate-500);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
}

.trust-item svg {
  color: var(--success);
}

/* Hero Interactive Mockup */
.hero-mockup-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 1.25rem;
  padding: 1.25rem;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.08);
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--slate-100);
  margin-bottom: 1rem;
}

.mockup-dots {
  display: flex;
  gap: 0.35rem;
}

.mockup-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 9999px;
  background: var(--slate-300);
}

.mockup-dot:nth-child(1) { background: #fca5a5; }
.mockup-dot:nth-child(2) { background: #fde047; }
.mockup-dot:nth-child(3) { background: #86efac; }

.mockup-status-badge {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--success);
  background: #ecfdf5;
  padding: 0.2rem 0.5rem;
  border-radius: 9999px;
}

.pulse-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 9999px;
  background: var(--success);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
}

.mockup-kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.mockup-kpi {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 0.75rem;
  padding: 0.75rem;
}

.mockup-kpi-label {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--slate-400);
}

.mockup-kpi-val {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--slate-900);
  font-family: var(--font-mono);
  margin-top: 0.15rem;
}

.mockup-stations {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.station-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 0.75rem;
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 0.5rem;
  font-size: 0.8125rem;
}

.station-row.active {
  border-left: 3px solid var(--primary);
  background: #fffbf7;
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section-alt {
  background-color: var(--slate-50);
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}

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

.section-head p {
  font-size: 1.0625rem;
  margin-top: 0.75rem;
}

/* Problem / Solution Grid */
.problem-solution-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

.ps-card {
  border-radius: 1rem;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.problem-card {
  background: #fff5f5;
  border: 1px solid #fed7d7;
}

.problem-card h3 {
  color: #9b2c2c;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.solution-card {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.solution-card h3 {
  color: #166534;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.ps-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

.ps-item svg {
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.problem-card .ps-item svg { color: var(--danger); }
.solution-card .ps-item svg { color: var(--success); }

/* Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.feature-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 1rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
  position: relative;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.08);
  border-color: rgba(255, 96, 0, 0.3);
}

.feature-icon-box {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(255, 96, 0, 0.15);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--slate-900);
}

.feature-card p {
  font-size: 0.8125rem;
  color: var(--slate-600);
  line-height: 1.55;
}

/* How It Works (Steps) */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  position: relative;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.step-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 1rem;
  padding: 1.75rem 1.25rem;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-badge {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  background: var(--primary);
  color: #ffffff;
  font-weight: 900;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 10px rgba(255, 96, 0, 0.3);
}

.step-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.step-card p {
  font-size: 0.8125rem;
}

/* Industry Cards */
.industries-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.industry-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 1rem;
  padding: 1.5rem;
  border-top: 4px solid var(--primary);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.industry-card h3 {
  font-size: 1.0625rem;
  color: var(--slate-900);
}

.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.tag-pill {
  font-size: 0.6875rem;
  font-weight: 600;
  background: var(--slate-100);
  color: var(--slate-700);
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
}

/* FAQ Accordion */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 0.875rem;
  overflow: hidden;
  transition: border-color 0.15s;
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate-900);
}

.faq-question svg {
  flex-shrink: 0;
  color: var(--slate-400);
  transition: transform 0.2s;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.25rem 1.5rem;
  font-size: 0.875rem;
  color: var(--slate-600);
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Demo CTA Section */
.cta-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--slate-900) 0%, #172033 100%);
  color: #ffffff;
}

.cta-section h2, .cta-section p {
  color: #ffffff;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 992px) {
  .cta-grid {
    grid-template-columns: 1fr 1.15fr;
  }
}

.cta-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.cta-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--slate-300);
}

.cta-features li svg {
  color: var(--primary);
  flex-shrink: 0;
}

/* Form Styling */
.demo-form-card {
  background: #ffffff;
  border-radius: 1.25rem;
  padding: 2rem;
  color: var(--slate-900);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.demo-form-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.demo-form-card p {
  font-size: 0.8125rem;
  color: var(--slate-500);
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.form-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--slate-700);
}

.form-input, .form-select {
  width: 100%;
  height: 2.75rem;
  padding: 0 0.875rem;
  border: 1px solid var(--slate-300);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-family: inherit;
  background: #ffffff;
  color: var(--slate-800);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-ring);
}

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

@media (min-width: 600px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-submit-btn {
  width: 100%;
  height: 3rem;
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.9375rem;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.form-submit-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.form-submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.form-success-banner {
  display: none;
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  border-radius: 0.75rem;
  padding: 1.5rem;
  text-align: center;
}

.form-success-banner.active {
  display: block;
}

/* Footer */
.site-footer {
  background: var(--slate-950);
  color: var(--slate-400);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--slate-800);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer-brand p {
  color: var(--slate-400);
  font-size: 0.8125rem;
  margin-top: 0.75rem;
  max-width: 320px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer-links a {
  color: var(--slate-400);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* KVKK Modal */
.modal-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  background: #ffffff;
  border-radius: 1rem;
  max-width: 640px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--slate-400);
  cursor: pointer;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  font-size: 0.875rem;
  color: var(--slate-600);
  line-height: 1.6;
}

.modal-body h4 {
  margin: 1rem 0 0.25rem;
  font-size: 0.9375rem;
}