/* ============================================
   Nexis Agent - Kurumsal Web Sitesi
   Siyah & beyaz, modern, minimal tasarım
   ============================================ */

:root {
  /* Renk paleti - Siyah & Beyaz */
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5;
  --color-dark: #000000;
  --color-dark-soft: #1a1a1a;
  --color-accent: #000000;
  --color-accent-hover: #333333;
  --color-text: #333333;
  --color-text-muted: #666666;
  --color-border: #e5e5e5;
  --color-white: #ffffff;

  /* Tipografi */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing & Layout */
  --container-max: 1200px;
  --section-padding: 5rem 0;
  --gap: 1.5rem;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.1);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Sections */
.section {
  padding: var(--section-padding);
}

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

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 2.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}

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

.btn-secondary {
  background: transparent;
  color: var(--color-dark);
  border: 2px solid var(--color-dark);
}

.btn-secondary:hover {
  background: var(--color-dark);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-nav {
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: var(--color-white) !important;
  border-radius: var(--radius);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

/* Logo metni - Header & Footer */
.logo-text {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  letter-spacing: -0.02em;
  transition: opacity var(--transition);
}

.logo-text:hover {
  opacity: 0.8;
}

.logo-text-footer {
  color: var(--color-white);
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-list a {
  font-weight: 500;
  color: var(--color-dark-soft);
}

.nav-list a:hover {
  color: var(--color-accent);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 0 4rem;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-soft) 100%);
  color: var(--color-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 255, 255, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.hero .btn-primary {
  background: var(--color-white);
  color: var(--color-dark);
}

.hero .btn-primary:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-dark);
}

.hero .btn-secondary {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--color-white);
}

.hero .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--color-white);
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.5; transform: translateX(-50%) translateY(8px); }
}

/* ========== Cards Grid ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--color-border);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  color: var(--color-accent);
}

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

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.card-link {
  font-weight: 600;
  color: var(--color-accent);
  font-size: 0.9rem;
}

.card-link:hover {
  text-decoration: underline;
}

/* Referans projeler - Hizmetlerimiz içinde */
.reference-projects {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.reference-projects-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.reference-projects-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

.reference-link {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-dark);
  padding: 0.6rem 1.25rem;
  border: 2px solid var(--color-dark);
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}

.reference-link:hover {
  background: var(--color-dark);
  color: var(--color-white);
}

/* ========== Why Preview ========== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.why-item {
  text-align: center;
  padding: 1.5rem;
}

.why-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border-radius: 50%;
  box-shadow: var(--shadow);
  color: var(--color-accent);
}

.why-icon svg {
  width: 28px;
  height: 28px;
}

.why-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.why-item p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* ========== Stats ========== */
.stats {
  background: var(--color-dark);
  color: var(--color-white);
}

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

.stat-item p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0.25rem;
}

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-suffix {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-white);
  opacity: 0.9;
}

/* ========== CTA Section ========== */
.cta-box {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-soft) 100%);
  color: var(--color-white);
  padding: 3rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-hover);
}

.cta-box h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.75rem;
}

.cta-box p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 1.5rem;
}

/* ========== About ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-content .section-title {
  margin-bottom: 1rem;
}

.about-content > p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.about-values {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.value-item strong {
  display: block;
  color: var(--color-dark);
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.value-item p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.values-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.values-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--color-dark-soft);
}

.value-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.about-visual {
  display: flex;
  justify-content: center;
}

.about-card {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-soft) 100%);
  padding: 3rem;
  border-radius: var(--radius-lg);
  color: var(--color-white);
  min-width: 280px;
}

.about-stat {
  font-size: 3rem;
  font-weight: 700;
  display: block;
  color: var(--color-white);
}

.about-card p {
  color: rgba(255, 255, 255, 0.9);
  margin-top: 0.5rem;
}

/* ========== Services Detail ========== */
.services-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.service-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

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

.service-card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  color: var(--color-accent);
}

.service-card-icon svg {
  width: 26px;
  height: 26px;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========== Why Detail ========== */
.why-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.why-detail-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.why-detail-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.why-detail-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-dark);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.why-detail-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.why-detail-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========== Blog ========== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.blog-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.blog-card-image {
  height: 180px;
  background: linear-gradient(135deg, var(--color-dark-soft) 0%, var(--color-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 1.1rem;
}

.blog-img-2 {
  background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
}

.blog-img-3 {
  background: linear-gradient(135deg, #14532d 0%, #0f172a 100%);
}

.blog-card-content {
  padding: 1.5rem;
}

.blog-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.blog-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.blog-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.blog-link {
  font-weight: 600;
  color: var(--color-accent);
  font-size: 0.9rem;
}

.blog-link:hover {
  text-decoration: underline;
}

/* ========== Contact ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
  align-items: start;
}

.contact-form {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-main);
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

.map-placeholder {
  height: 100%;
  min-height: 320px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-placeholder-content {
  text-align: center;
  color: var(--color-text-muted);
}

.map-placeholder-content svg {
  width: 48px;
  height: 48px;
  margin: 0 auto 0.75rem;
  color: var(--color-dark);
}

.map-placeholder-content p {
  font-weight: 600;
  color: var(--color-dark-soft);
}

/* ========== Footer ========== */
.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 3rem 0 1.5rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-text {
  margin-bottom: 0.75rem;
  display: inline-block;
}

.footer-brand p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 320px;
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  color: var(--color-white);
  transition: background var(--transition);
}

.footer-social a:hover {
  background: var(--color-white);
  color: var(--color-dark);
}

.footer-bottom {
  padding-top: 1.5rem;
}

.footer-bottom p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ========== Reveal animation (initial state) ========== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========== Responsive ========== */
@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-visual {
    order: -1;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-list li {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-list a {
    display: block;
    padding: 1rem 0;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: 3rem 0;
  }

  .logo-text {
    font-size: 1.5rem;
  }

  .logo-text-footer {
    font-size: 1.2rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .cta-box {
    padding: 2rem 1.5rem;
  }
}