/* RENK PALETİ - SİYAH BEYAZ GRİ */
:root {
  --color-bg: #181A1B;
  --color-surface: #23272A;
  --color-white: #fff;
  --color-text: #F3F3F3;
  --color-heading: #fff;
  --color-accent: #00C3FF;
  --color-border: #2C2F34;
  --color-shadow: 0 2px 16px rgba(0,0,0,0.18);
}

html, body {
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  font-family: 'Open Sans', Arial, sans-serif;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body::before {
  content: "";
  position: fixed;
  z-index: 0;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(120deg, #23272A 0%, #181A1B 100%);
  background-size: 200% 200%;
  animation: gradientMove 6s ease-in-out infinite;
  opacity: 0.96;
  pointer-events: none;
}
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.hero, .about, .services, .references, .contact, .footer, .header {
  position: relative;
  z-index: 1;
}

/* HEADER */
.header {
  background: var(--color-surface);
  box-shadow: var(--color-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 2.5rem;
  border-bottom: 1.5px solid var(--color-border);
}
.header__logo img {
  width: 72px;
  height: 72px;
  border-radius: 14px;
  background: none;
  border: none;
  box-shadow: none;
  object-fit: cover;
  display: block;
}
.header__menu {
  list-style: none;
  display: flex;
  gap: 2.2rem;
  margin: 0;
  padding: 0;
}
.header__menu-item a {
  text-decoration: none;
  color: var(--color-white);
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: 0.5px;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border 0.2s;
}
.header__menu-item a:hover,
.header__menu-item a:focus,
.header__menu-item a.active {
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
}
.header__mobile-menu {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}
.header__mobile-menu span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all 0.3s;
}
@media (max-width: 1024px) {
  .header {
    padding: 0.7rem 1rem;
  }
}
@media (max-width: 768px) {
  .header {
    flex-wrap: wrap;
    padding: 0.7rem 0.7rem;
  }
  .header__logo img {
    width: 56px;
    height: 56px;
  }
  .header__mobile-menu {
    display: flex;
    z-index: 120;
  }
  .header__nav {
    display: none;
    position: fixed;
    top: 0; right: 0;
    width: 80vw;
    max-width: 320px;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 2.5rem 1.5rem 1.5rem 1.5rem;
    box-shadow: -2px 0 16px rgba(0,0,0,0.18);
    transition: transform 0.3s cubic-bezier(.4,2,.6,1);
    transform: translateX(100%);
    z-index: 110;
  }
  .header__nav.is-open {
    display: flex;
    transform: translateX(0);
  }
  .header__menu {
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    align-items: flex-start;
  }
  .header__menu-item a {
    font-size: 1.15rem;
    padding: 0.5rem 0;
    border-bottom: none;
  }
  body.menu-open {
    overflow: hidden;
  }
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  color: var(--color-heading);
  position: relative;
  text-align: center;
  padding: 0 1rem;
}
.hero__content {
  z-index: 2;
  background: var(--color-surface);
  border-radius: 12px;
  padding: 2.5rem 2rem 2rem 2rem;
  box-shadow: var(--color-shadow);
}
.hero__title {
  font-size: 2.5rem;
  letter-spacing: 2px;
  margin-bottom: 1.2rem;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 800;
  color: var(--color-heading);
}
.hero__subtitle {
  font-size: 1.2rem;
  margin-bottom: 2.2rem;
  font-weight: 400;
  color: var(--color-text);
}
.hero__button {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 700;
  padding: 1rem 2.5rem;
  border-radius: 32px;
  font-size: 1.15rem;
  text-decoration: none;
  box-shadow: var(--color-shadow);
  transition: background 0.2s, color 0.2s, transform 0.2s;
  border: none;
  cursor: pointer;
  letter-spacing: 0.5px;
}
.hero__button:hover,
.hero__button:focus {
  background: #fff;
  color: var(--color-accent);
  transform: translateY(-3px) scale(1.04);
}
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  z-index: 2;
}
.hero__scroll-icon {
  display: inline-block;
  width: 32px;
  height: 32px;
  border-left: 4px solid var(--color-accent);
  border-bottom: 4px solid var(--color-accent);
  transform: rotate(-45deg);
  animation: scrollDown 1.2s infinite alternate;
  margin-top: 16px;
}
@keyframes scrollDown {
  0% { transform: translateY(0) rotate(-45deg); }
  100% { transform: translateY(16px) rotate(-45deg); }
}
@media (max-width: 480px) {
  .hero__title {
    font-size: 1.4rem;
  }
  .hero__content {
    padding: 0.7rem 0.2rem 0.7rem 0.2rem;
  }
}
.hero__logo {
  display: block;
  margin: 0 auto 1.2rem auto;
  width: 90px;
  height: 90px;
  border-radius: 16px;
  object-fit: cover;
}

/* BİZ KİMİZ */
.about {
  background: var(--color-bg);
  padding: 4rem 0 3rem 0;
}
.about__container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.about__title {
  font-size: 2rem;
  color: var(--color-heading);
  margin-bottom: 1.5rem;
  text-align: center;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 1px;
}
.about__desc {
  font-size: 1.1rem;
  color: #b3b3b3;
  margin-bottom: 2.5rem;
  text-align: center;
  line-height: 1.7;
}
.about__team {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.about__team-card {
  background: var(--color-surface);
  border-radius: 10px;
  box-shadow: var(--color-shadow);
  overflow: hidden;
  width: 220px;
  text-align: center;
  transition: transform 0.25s, box-shadow 0.25s;
  cursor: pointer;
  position: relative;
}
.about__team-card:hover {
  transform: translateY(-10px) scale(1.04);
  box-shadow: 0 8px 32px rgba(0,0,0,0.13);
}
.about__team-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  background: #fff;
  border-radius: 10px 10px 0 0;
  box-shadow: var(--color-shadow);
  margin-bottom: 0.5rem;
}
.about__team-info {
  padding: 1.1rem 0.5rem 1.3rem 0.5rem;
}
.about__team-name {
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 700;
  color: var(--color-heading);
  font-size: 1.1rem;
  display: block;
  margin-bottom: 0.3rem;
}
.about__team-role {
  color: var(--color-accent);
  font-size: 0.98rem;
}
@media (max-width: 900px) {
  .about__team {
    gap: 1.2rem;
  }
}
@media (max-width: 480px) {
  .about__team-card {
    max-width: 98vw;
    min-width: unset;
    padding: 0.5rem 0.2rem;
  }
  .about__desc {
    font-size: 1rem;
    padding: 0 0.2rem;
  }
}

/* HİZMETLERİMİZ */
.services {
  background: var(--color-bg);
  padding: 4rem 0 3rem 0;
}
.services__container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.services__title {
  font-size: 2rem;
  color: var(--color-heading);
  margin-bottom: 2.5rem;
  text-align: center;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 1px;
}
.services__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 2.5rem;
  justify-items: center;
  align-items: stretch;
  margin: 0 auto;
  max-width: 1100px;
}
.services__card {
  background: transparent;
  border-radius: 14px;
  box-shadow: none;
  width: 100%;
  min-width: 180px;
  max-width: 260px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  border: none;
  perspective: 900px;
}
.services__card-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.9s cubic-bezier(.4,2,.6,1);
  transform-style: preserve-3d;
}
.services__card--open .services__card-inner {
  transform: rotateY(180deg);
}
.services__card-front,
.services__card-back {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1.1rem 1.3rem 1.1rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.13);
  background: var(--color-surface);
  border: 1.5px solid rgba(255,255,255,0.04);
  transition: box-shadow 0.25s, border 0.25s;
}
.services__card-front {
  z-index: 2;
}
.services__card-back {
  transform: rotateY(180deg);
  z-index: 3;
}
.services__card-title {
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: 0.5px;
  margin-bottom: 0.7rem;
  text-align: center;
}
.services__card-desc {
  font-size: 1.02rem;
  color: #eaeaea;
  text-align: center;
  line-height: 1.6;
  font-family: 'Open Sans', Arial, sans-serif;
  font-weight: 400;
  word-break: break-word;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
}
.services__card-back ul {
  padding: 0;
  margin: 0;
  list-style: disc inside;
  color: #eaeaea;
  font-size: 1.01rem;
  line-height: 1.7;
  text-align: left;
}
.services__card:hover .services__card-front,
.services__card:hover .services__card-back {
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  border: 1.5px solid var(--color-accent);
}
@media (max-width: 1100px) {
  .services__cards {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .services__card {
    max-width: 100%;
  }
}
@media (max-width: 480px) {
  .services__cards {
    gap: 0.7rem;
    padding: 0 0.2rem;
  }
  .services__card {
    min-width: 0;
    max-width: 100vw;
    padding: 0.2rem 0;
  }
  .services__card-title {
    font-size: 1.05rem;
  }
  .services__card-desc {
    font-size: 0.98rem;
  }
}

/* REFERANSLAR */
.references {
  background: var(--color-bg);
  padding: 4rem 0 3rem 0;
}
.references__container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.references__title {
  font-size: 2rem;
  color: var(--color-heading);
  margin-bottom: 2.5rem;
  text-align: center;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 1px;
}
.references__slider {
  overflow: hidden;
  width: 100%;
  margin-bottom: 2.5rem;
  background: var(--color-surface);
  border-radius: 10px;
  box-shadow: var(--color-shadow);
}
.references__slider-track {
  display: flex;
  align-items: center;
  gap: 2rem;
  justify-content: center;
  animation: sliderMove 18s linear infinite;
  will-change: transform;
}
.references__logo {
  height: 60px;
  width: 60px;
  object-fit: contain;
  background: #23272A;
  border-radius: 10px;
  margin: 12px 0;
  padding: 8px;
  box-shadow: var(--color-shadow);
  filter: grayscale(1) brightness(0.9);
  opacity: 0.92;
  transition: filter 0.2s, opacity 0.2s;
  display: inline-block;
}
.references__logo:hover {
  filter: grayscale(0) brightness(1.1);
  opacity: 1;
}
@keyframes sliderMove {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.references__testimonials {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}
.references__testimonial {
  background: var(--color-surface);
  color: #eaeaea;
  border-radius: 10px;
  box-shadow: var(--color-shadow);
  padding: 1.5rem 2rem;
  max-width: 340px;
  min-width: 220px;
  text-align: center;
  font-size: 1.05rem;
  font-style: italic;
  margin-bottom: 1rem;
}
.references__testimonial-author {
  display: block;
  margin-top: 1rem;
  color: var(--color-accent);
  font-size: 0.98rem;
  font-style: normal;
}
@media (max-width: 900px) {
  .references__slider-track {
    gap: 1.2rem;
  }
  .references__testimonials {
    gap: 1rem;
  }
}
@media (max-width: 480px) {
  .references__slider-track {
    gap: 0.7rem;
  }
  .references__logo {
    width: 44px;
    height: 44px;
    padding: 4px;
  }
  .references__testimonial {
    font-size: 0.98rem;
    padding: 1rem 0.5rem;
  }
}

/* İLETİŞİM */
.contact {
  background: var(--color-bg);
  padding: 4rem 0 3rem 0;
}
.contact__container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.contact__title {
  font-size: 2rem;
  color: var(--color-heading);
  margin-bottom: 2.5rem;
  text-align: center;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 1px;
}
.contact__content {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.contact__form {
  background: var(--color-surface);
  border-radius: 10px;
  box-shadow: var(--color-shadow);
  padding: 2rem 2.5rem;
  min-width: 320px;
  max-width: 400px;
  flex: 1 1 320px;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.contact__form-group {
  width: 100%;
  position: relative;
}
.contact__input, .contact__textarea {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  background: #23272A;
  color: var(--color-white);
  font-size: 1rem;
  font-family: 'Open Sans', Arial, sans-serif;
  margin-bottom: 0.2rem;
  transition: border 0.2s;
}
.contact__input:focus, .contact__textarea:focus {
  border: 1.5px solid var(--color-accent);
  outline: none;
}
.contact__button {
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 700;
  padding: 1rem 2.2rem;
  border-radius: 32px;
  font-size: 1.1rem;
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.2s;
  margin-top: 0.5rem;
}
.contact__button:hover {
  background: #fff;
  color: var(--color-accent);
  transform: translateY(-2px) scale(1.03);
}
.contact__form-message {
  min-height: 24px;
  font-size: 1rem;
  color: #b3b3b3;
  margin-top: 0.5rem;
  transition: color 0.3s;
}
.contact__info {
  flex: 1 1 320px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
  min-width: 280px;
  background: var(--color-surface);
  border-radius: 10px;
  box-shadow: var(--color-shadow);
  padding: 2rem 2.5rem;
}
.contact__details {
  color: #b3b3b3;
  font-size: 1.05rem;
}
.contact__details a {
  color: var(--color-accent);
  text-decoration: none;
}
.contact__details a:hover {
  text-decoration: underline;
}
@media (max-width: 900px) {
  .contact__content {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
  }
  .contact__info {
    width: 100%;
    min-width: unset;
  }
}
@media (max-width: 700px) {
  .contact__form, .contact__info {
    padding: 1rem 0.2rem !important;
    min-width: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
    margin: 0 auto !important;
    box-sizing: border-box !important;
  }
  .contact__button {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0.7rem 0 0 0 !important;
    display: block !important;
    box-sizing: border-box !important;
  }
  .contact__input, .contact__textarea {
    font-size: 1rem !important;
    padding: 0.8rem 0.8rem !important;
    box-sizing: border-box !important;
  }
}
@media (max-width: 480px) {
  .contact__form, .contact__info {
    padding: 1rem 0.5rem;
    min-width: unset;
    max-width: 100vw;
  }
  .contact__title {
    font-size: 1.2rem;
  }
}

/* FOOTER */
.footer {
  background: var(--color-surface);
  padding: 2rem 0 1.2rem 0;
  position: relative;
  width: 100%;
  margin-top: 0;
  border-top: 1.5px solid var(--color-border);
}
.footer__container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  gap: 0.6rem;
}
.footer__info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
  text-align: center;
}
.footer__brand {
  color: #fff;
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
}
.footer__contact {
  color: #b3b3b3;
  font-size: 1rem;
}
.footer__whatsapp {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: var(--color-shadow);
  transition: background 0.2s, transform 0.2s;
  width: 56px;
  height: 56px;
}
.footer__whatsapp svg {
  display: block;
}
.footer__whatsapp:hover {
  background: #fff;
  color: var(--color-accent);
  transform: scale(1.08);
}
@media (max-width: 700px) {
  .footer__container {
    flex-direction: column;
    gap: 1.2rem;
    align-items: flex-start;
  }
  .footer__whatsapp {
    right: 16px;
    bottom: 16px;
    width: 48px;
    height: 48px;
  }
}
@media (max-width: 480px) {
  .footer__container {
    padding: 0 0.2rem;
    align-items: center !important;
  }
  .footer__info {
    font-size: 0.98rem;
  }
  .footer__whatsapp {
    right: 8px;
    bottom: 8px;
    width: 40px;
    height: 40px;
  }
}

/* ANİMASYONLAR (KISA VE PERFORMANSLI) */
.hero, .about, .services, .references, .contact {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.4s cubic-bezier(.4,2,.6,1), transform 0.4s cubic-bezier(.4,2,.6,1);
}
.hero.is-visible, .about.is-visible, .services.is-visible, .references.is-visible, .contact.is-visible {
  opacity: 1;
  transform: none;
}

.loader {
  position: fixed;
  z-index: 9999;
  top: 0; left: 0; right: 0; bottom: 0;
  width: 100vw;
  height: 100vh;
  background: #111;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.7s cubic-bezier(.4,2,.6,1), visibility 0.7s;
  opacity: 1;
  visibility: visible;
}
.loader--hide {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.loader__logo {
  width: 110px;
  height: 110px;
  object-fit: contain;
  border-radius: 16px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.18);
  animation: loaderLogoAnim 1.2s cubic-bezier(.4,2,.6,1) infinite alternate;
}
@keyframes loaderLogoAnim {
  0% { transform: scale(1) rotate(0deg); opacity: 0.7; }
  60% { transform: scale(1.08) rotate(7deg); opacity: 1; }
  100% { transform: scale(1) rotate(-7deg); opacity: 0.7; }
}

@media (max-width: 700px) {
  .services__cards {
    grid-template-columns: 1fr !important;
    grid-template-rows: repeat(6, 1fr) !important;
    gap: 1rem !important;
    padding: 0 0.5rem !important;
  }
  .services__card {
    max-width: 100% !important;
    min-width: 0 !important;
    margin: 0 auto !important;
  }
  .header__menu {
    gap: 1rem !important;
  }
  .about__team-card {
    max-width: 100% !important;
  }
}