:root {
  --dark: #000033;
  --muted: #5f5f7a;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: #ffffff;
  color: var(--dark);
}

/* ---------- NAV ---------- */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 32px 64px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    transition: all 0.3s ease; 
    box-sizing: border-box;
}

nav strong {
    font-size: 50px;
    color: white;
    cursor: pointer;
}

nav a {
    text-decoration: none;
    color: white;
    margin-left: 32px;
    font-size: 20px;
    font-weight: bold;
}

nav a:hover {
    color: var(--dark);
}

nav.scrolled {
    background-color: rgb(0 0 0 / 39%);
    backdrop-filter: blur(0px);          
    -webkit-backdrop-filter: blur(15px); 
    box-shadow: 0 4px 30px rgba(0,0,0,0.1);
}

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  padding: 140px 64px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 64px;
}

.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  color: white;
}

.hero p {
  font-size: 20px;
  max-width: 600px;
  color: white;
}

.hero-logo {
  display: flex;
  justify-content: flex-end;
}

.hero-logo svg {
  width: 100%;
  max-width: 420px;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 51, 0.2)); 
}

/* ---------- SERVICES ---------- */
section {
  padding: 120px 64px;
}

.solutions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 56px;
}

.service {
  border-top: 2px solid #f0f0f5;
  padding-top: 24px;
}

.service h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.service p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- FOOTER ---------- */
footer {
  padding: 64px;
  border-top: 1px solid #eee;
  font-size: 14px;
  color: var(--muted);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero p {
    margin: 0 auto;
  }

  .hero-logo {
    justify-content: center;
    margin-top: 40px;
  }

  .hero-logo svg {
    max-width: 280px; 
  }
}

/* 1. Akış Hareketi (Sağdan Sola) */
@keyframes wave-flow-left {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); } 
}

/* 2. Yükselme Hareketi */
@keyframes rise-up {
    0% { transform: translateY(110%); }
    100% { transform: translateY(-10%); }
}

/* 3. Beyazlaşma (Solidify) Hareketi */
@keyframes solidify-white {
    0%, 70% { 
        fill: var(--start-color); 
        opacity: var(--start-opacity); 
    }
    100% { 
        fill: #FFFFFF; 
        opacity: 1; 
    }
}

.rise-group {
    animation: rise-up 6s cubic-bezier(0.4, 0.0, 0.2, 1) forwards;
}

.wave-item {
    animation-name: wave-flow-left, solidify-white;
    animation-duration: var(--flow-speed), 6s;
    animation-timing-function: linear, ease-out;
    animation-iteration-count: infinite, 1;
    animation-fill-mode: none, forwards;
}

.wave-back {
    --start-color: #a6c1ee; 
    --start-opacity: 0.3;
    --flow-speed: 7s;
}

.wave-mid {
    --start-color: #dbeaff;
    --start-opacity: 0.5;
    --flow-speed: 5s;
}

.wave-front {
    --start-color: #FFFFFF;
    --start-opacity: 0.9;
    --flow-speed: 3s;
}

.x-placeholder { fill: #FFFFFF; opacity: 0.1; }
.static-text { fill: #FFFFFF; }


.video-bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index: -1;
    overflow: hidden;
}

.video-bg-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    /*transform: scale(1.25);
    transform-origin: top right;*/
    position: absolute;
    top: 0;
    left: 0;
    filter: brightness(0.8); 
}

.video-overlay {
    display: none;
}


.solutions-section {
    padding: 60px 20px;
    background-color: #f9f9f9;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 10px;
}

.section-subtitle {
    color: #666;
    margin-bottom: 50px;
    font-size: 1.1rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.solution-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
    border-bottom: 3px solid transparent;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    border-bottom: 3px solid #3498db; 
}

.icon-box {
    font-size: 40px;
    margin-bottom: 20px;
    color: #3498db;
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.solution-card p {
    color: #7f8c8d;
    line-height: 1.6;
    font-size: 0.95rem;
}

.enterprise-section {
    padding: 80px 20px;
    background-color: #111827; 
    color: #ffffff;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

.ent-container {
    max-width: 1200px;
    margin: 0 auto;
}

.ent-header {
    text-align: center;
    margin-bottom: 60px;
}

.ent-tagline {
    color: #3b82f6;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    margin: 0 0 10px 0;
    font-size: 0.9rem;
}

.ent-title {
    font-size: 2.5rem;
    margin: 0 0 20px 0;
    color: #fff;
}

.ent-subtitle {
    color: #9ca3af;
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.ent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.ent-card {
    background: #1f2937;
    padding: 40px 30px;
    border-radius: 12px;
    border: 1px solid #374151;
    transition: transform 0.3s, border-color 0.3s;
}

.ent-card:hover {
    transform: translateY(-5px);
    border-color: #3b82f6;
}

.ent-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.ent-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #fff;
}

.ent-card p {
    color: #d1d5db;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.ent-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid #374151;
    padding-top: 15px;
}

.ent-list li {
    color: #9ca3af;
    font-size: 0.9rem;
    margin-bottom: 5px;
    display: flex;
    align-items: center;
}

.ent-list li::before {
    content: "•";
    color: #3b82f6;
    font-weight: bold;
    margin-right: 10px;
}

.ent-cta {
    text-align: center;
    margin-top: 40px;
}

.ent-button {
    background-color: #3b82f6;
    color: white;
    padding: 15px 40px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: background 0.3s;
}

.ent-button:hover {
    background-color: #2563eb;
}

/* Responsive Fix */
@media (max-width: 768px) {
    .ent-title { font-size: 2rem; }
    .enterprise-section { padding: 50px 20px; }
}


.startup-section {
    padding: 90px 20px;
    background: linear-gradient(to bottom, #ffffff, #f3f4f6);
    font-family: 'Segoe UI', system-ui, sans-serif;
    color: #333;
}

.startup-container {
    max-width: 1100px;
    margin: 0 auto;
}

.startup-header {
    text-align: center;
    margin-bottom: 60px;
}

.startup-badge {
    background-color: #e0f2fe;
    color: #0284c7;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 15px;
}

.startup-title {
    font-size: 2.5rem;
    margin: 0 0 15px 0;
    color: #111;
    font-weight: 800;
}

.startup-subtitle {
    font-size: 1.15rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Grid Layout */
.startup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.startup-card {
    background: white;
    padding: 35px;
    border-radius: 16px;
    border: 1px solid #eee;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.startup-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

/* Highlight the MVP card (Center one usually) */
.highlight-card {
    border: 2px solid #0284c7; /* Brand Color Border */
    background-color: #f0f9ff;
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    color: #f1f1f1;
    position: absolute;
    top: 10px;
    right: 20px;
    z-index: 0;
}

.highlight-card .step-number {
    color: #e0f2fe;
}

.startup-card h3 {
    position: relative;
    z-index: 1;
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #222;
}

.startup-card p {
    position: relative;
    z-index: 1;
    color: #666;
    line-height: 1.6;
    margin-bottom: 25px;
}

/* Tags/Skills chips */
.tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tags span {
    background-color: #f3f4f6;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #555;
}

.highlight-card .tags span {
    background-color: white;
    color: #0284c7;
}

/* Footer & CTA */
.startup-footer {
    text-align: center;
    margin-top: 50px;
}

.promise-box {
    margin-bottom: 30px;
    color: #444;
    font-size: 1.1rem;
}

.startup-cta {
    background: linear-gradient(90deg, #2563eb, #0284c7);
    color: white;
    padding: 18px 45px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    box-shadow: 0 10px 20px rgba(2, 132, 199, 0.3);
    transition: all 0.3s;
    display: inline-block;
}

.startup-cta:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 30px rgba(2, 132, 199, 0.4);
}

@media (max-width: 768px) {
    .startup-title { font-size: 2rem; }
}


.contact-section {
    padding: 120px 20px;
    background-color: #0f172a; 
    color: #ffffff;
    font-family: 'Segoe UI', system-ui, sans-serif;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact-container {
    max-width: 800px;
    width: 100%;
}

.contact-badge {
    background-color: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 25px;
}

.contact-title {
    font-size: 3.5rem;
    margin: 0 0 20px 0;
    font-weight: 800;
    background: -webkit-linear-gradient(#fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-desc {
    font-size: 1.25rem;
    color: #94a3b8;
    margin-bottom: 50px;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* The Main Button Style */
.email-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 600;
    padding: 20px 60px;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.email-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.5);
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.email-button .icon {
    font-size: 1.8rem;
}

.contact-footer {
    margin-top: 60px;
    color: #64748b;
    font-size: 0.95rem;
    border-top: 1px solid #1e293b;
    padding-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.location {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #cbd5e1;
    font-weight: 500;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .contact-title { font-size: 2.5rem; }
    .email-button { 
        width: 100%; 
        padding: 15px 20px;
        font-size: 1.2rem;
        box-sizing: border-box;
    }
}