/* GENEL AYARLAR */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Poppins", sans-serif;
  font-weight: 400;
  font-style: normal;
  background: #020617;          /* koyu lacivert / siyah arka plan */
  color: #e5e7eb;               /* açık gri metin */
}



/* Metin */
p {
  text-align: center;
  line-height: 1.6;
}

/* ÜST MENÜ */
header {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid #1f2937;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
}

nav {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 2rem;
  justify-content: center;
}

nav a {
  text-decoration: none;
  color: #e5e7eb;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

nav a:hover {
  color: #c7d2fe; /* açık mor/mavi ton, çok hafif değişim */
}


/* hover alt çizgi efekti */
nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: #6366f1;
  transition: width 0.2s ease;
}

nav a:hover::after {
  width: 100%;
}

/* 12 COL GRID SİSTEMİ */
.container {
  width: min(1100px, 92%);
  margin: 0 auto;              /* ortala */
}

.row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);  /* 12 eşit kolon */
  gap: 1rem;                               /* kolonlar arası boşluk */
}

/* kolonlar */
.col-12 { grid-column: span 12; }
.col-11 { grid-column: span 11; }
.col-10 { grid-column: span 10; }
.col-9  { grid-column: span 9; }
.col-8  { grid-column: span 8; }
.col-7  { grid-column: span 7; }
.col-6  { grid-column: span 6; }
.col-5  { grid-column: span 5; }
.col-4  { grid-column: span 4; }
.col-3  { grid-column: span 3; }
.col-2  { grid-column: span 2; }
.col-1  { grid-column: span 1; }

/* responsive: telefonda hepsi 12 olsun */
@media (max-width: 900px) {
  .row {
    grid-template-columns: repeat(12, 1fr);
  }
  .col-6,
  .col-4,
  .col-3 {
    grid-column: span 12;
  }
}

/* BÖLÜMLER GENEL */
section {
  padding: 80px 16px;
}

#home {
  padding: 0;   /* hero bölümünde padding yok, görsel tam ekrana oturur */
}

/* HERO (HOME) */
#home {
  position: relative;
  text-align: center;
  color: white;
}

#home h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  margin-bottom: 8px;
}

#home p {
  max-width: 480px;
  margin: 0 auto;
  opacity: 0.9;
}

#home img {
  display: block;
  width: 100%;
  max-width: none;
  height: auto;
  border-radius: 0;
  margin: 0;
  filter: brightness(40%);   /* 👈 görseli %60 parlak yapar */
}


.hero-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 0 1rem;
  z-index: 1;
}

.hero-text h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  margin-bottom: 0.5rem;
}

.hero-text p {
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.6;
}



/* BAŞLIKLAR */
h2 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

h2 span {
  color: #6366f1;        /* accent renk */
}

/* İsteğe bağlı: altında çok hafif bir çizgi */
h2 span::after {<
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: #4f46e5;
  margin: 8px auto 0;
  border-radius: 999px;
}


/* PROJELER KISMI */
#projects {
  background: #020617;
}

#projects h2 {
  color: #e5e7eb;
}

/* Proje kartları */
.card {
  background: #0f172a;
  border-radius: 14px;
  padding: 1.4rem 1rem 1.8rem;
  box-shadow: 0 18px 40px rgba(0,0,0,0.45);
  text-align: center;
  height: 100%;
  border: 1px solid #1f2937;

  /* link olduğu için önemli olanlar */
  text-decoration: none;   /* alt çizgiyi kaldır */
  color: inherit;          /* yazı rengi normal kalsın */
  display: block;          /* A etiketi kutu gibi davransın */

  /* hover animasyonları */
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}


.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.65);
  border-color: #6366f1;
}


.card img {
  display: block;
  width: 100%;        /* kartın iç genişliğine göre ayarla */
  max-width: 100%;    /* taşmasın */
  height: auto;
  border-radius: 10px;
  margin-bottom: 1rem;
}


.card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.95rem;
  opacity: 0.9;
}

/* HAKKIMDA */
#about {
  background: #0b1120;
}

#about p {
  max-width: 700px;
  margin: 0 auto;
}

/* İletişim bölümü (ikonlu versiyon) */
#contact {
  background-color: #111;
  color: #fff;
  text-align: center;
  padding: 70px 20px;
}

#contact h2 {
  font-size: 2.2rem;
  margin-bottom: 25px;
  letter-spacing: 1px;
}

#contact p {
  font-size: 1.1rem;
  margin-bottom: 40px;
  color: #ddd;
}

.contact-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.1rem;
  color: #ffc35a;
  text-decoration: none;
  transition: all 0.3s ease;
}

.contact-item i {
  font-size: 1.5rem;
}

.contact-item:hover {
  color: #a9e8eb;
  transform: translateY(-3px);
}

@media (min-width: 768px) {
  .contact-links {
    flex-direction: row;
    justify-content: center;
  }
}


/* FOOTER */
footer {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
  background: #020617;
  color: #6b7280;
  font-size: 0.85rem;
  border-top: 1px solid #1f2937;
}

/* TELEFON GÖRÜNÜMÜ – SADECE MENÜ İÇİN */
@media (max-width: 600px) {
  nav {
    flex-direction: column;
    align-items: center;
  }
}

/* MARGIN YARDIMCI SINIFLARI (DERSTE KULLANIM İÇİN) */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.my-2 { margin-top: 1rem; margin-bottom: 1rem; }
.mx-2 { margin-left: 1rem; margin-right: 1rem; }