/* ============================================================
   WalksWeb — Ana CSS Tasarım Sistemi
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

/* ── CSS Değişkenleri ─────────────────────────────────────── */
:root {
  --bg:           #0A0E1A;
  --surface:      #111827;
  --surface-2:    #1C2333;
  --surface-3:    #242f45;
  --accent:       #6366F1;
  --accent-light: #818CF8;
  --accent-dim:   rgba(99,102,241,0.15);
  --gold:         #F59E0B;
  --gold-dim:     rgba(245,158,11,0.15);
  --green:        #10B981;
  --red:          #EF4444;
  --text:         #F1F5F9;
  --text-muted:   #94A3B8;
  --text-faint:   #475569;
  --border:       rgba(99,102,241,0.18);
  --border-soft:  rgba(255,255,255,0.06);
  --radius:       12px;
  --radius-lg:    20px;
  --radius-full:  999px;
  --shadow:       0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:    0 12px 48px rgba(0,0,0,0.6);
  --font-display: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --transition:   0.25s cubic-bezier(0.4,0,0.2,1);
  --max-w:        1200px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Layout ──────────────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section    { padding: 100px 0; }
.section-sm { padding: 60px 0; }

/* ── Typography ──────────────────────────────────────────────── */
h1,h2,h3,h4,h5 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; }
.display-1 { font-size: clamp(2.4rem, 5vw, 4rem); letter-spacing: -0.03em; }
.display-2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); letter-spacing: -0.02em; }
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent-light);
  background: var(--accent-dim); padding: 6px 14px;
  border-radius: var(--radius-full); margin-bottom: 20px;
}
.section-title { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 16px; }
.section-sub   { color: var(--text-muted); max-width: 540px; font-size: 1.05rem; }
.text-accent   { color: var(--accent-light); }
.text-gold     { color: var(--gold); }
.text-muted    { color: var(--text-muted); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-full);
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  transition: all var(--transition); white-space: nowrap;
}
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 0 24px rgba(99,102,241,0.35);
}
.btn-primary:hover {
  background: var(--accent-light);
  box-shadow: 0 0 36px rgba(99,102,241,0.55);
  transform: translateY(-2px);
}
.btn-outline {
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
  transform: translateY(-2px);
}
.btn-gold {
  background: var(--gold); color: #0A0E1A; font-weight: 700;
}
.btn-gold:hover { background: #FBBF24; transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 0.85rem; }
.btn-lg { padding: 18px 36px; font-size: 1.05rem; }

/* ── Cards ───────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--border);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.card-glass {
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
}

/* ── Header / Navigation ─────────────────────────────────────── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 24px;
  transition: all var(--transition);
}
.header.scrolled {
  background: rgba(10,14,26,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: 0 4px 32px rgba(0,0,0,0.5);
}
.nav {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 800;
  font-size: 1.35rem; color: var(--text);
}
.nav-logo .logo-dot { color: var(--accent); }
.nav-links {
  display: flex; align-items: center; gap: 8px;
}
.nav-links a {
  padding: 8px 16px; border-radius: var(--radius-full);
  font-size: 0.9rem; font-weight: 500; color: var(--text-muted);
  transition: all var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text); background: var(--surface-2);
}
.nav-cta { margin-left: 12px; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  width: 28px; padding: 4px;
}
.nav-toggle span {
  display: block; height: 2px; background: var(--text);
  border-radius: 2px; transition: all var(--transition);
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 24px 80px;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(99,102,241,0.25) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 80% 50%, rgba(167,139,250,0.08) 0%, transparent 60%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border-soft) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
}
.hero-content { position: relative; z-index: 1; max-width: 760px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--accent-dim);
  font-size: 0.82rem; font-weight: 600; letter-spacing: 0.05em;
  color: var(--accent-light); margin-bottom: 28px;
}
.hero-badge .badge-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 8px var(--green); animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; } 50% { opacity: 0.4; }
}
.hero h1 { margin-bottom: 24px; }
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent-light), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub { font-size: 1.15rem; color: var(--text-muted); margin-bottom: 40px; max-width: 540px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.hero-stat .num {
  font-family: var(--font-display); font-size: 2rem; font-weight: 800; color: var(--text);
}
.hero-stat .num span { color: var(--accent-light); }
.hero-stat .label { font-size: 0.82rem; color: var(--text-muted); margin-top: 2px; }

/* ── Audit Form (Homepage) ───────────────────────────────────── */
.audit-section {
  padding: 80px 24px;
  background: linear-gradient(180deg, transparent, var(--surface) 30%, var(--surface) 70%, transparent);
}
.audit-box {
  max-width: 760px; margin: 0 auto;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: 0 0 60px rgba(99,102,241,0.08);
}
.audit-box h2 { margin-bottom: 8px; }
.audit-box p  { color: var(--text-muted); margin-bottom: 32px; }
.audit-form   { display: flex; flex-direction: column; gap: 16px; }
.audit-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); }
.form-control {
  width: 100%; padding: 13px 18px;
  background: var(--surface); border: 1.5px solid var(--border-soft);
  border-radius: var(--radius); color: var(--text);
  font-family: var(--font-body); font-size: 0.95rem;
  transition: border-color var(--transition);
}
.form-control:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-control::placeholder { color: var(--text-faint); }

/* ── Services Grid ───────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  opacity: 0; transition: opacity var(--transition);
}
.service-card:hover { border-color: var(--border); transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 52px; height: 52px;
  background: var(--accent-dim); border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 1.4rem;
  transition: transform var(--transition);
}
.service-card:hover .service-icon { transform: scale(1.1); }
.service-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.service-card p  { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; margin-bottom: 20px; }
.service-card .card-link {
  font-size: 0.85rem; font-weight: 600; color: var(--accent-light);
  display: flex; align-items: center; gap: 4px;
  transition: gap var(--transition);
}
.service-card:hover .card-link { gap: 8px; }

/* ── Portfolio Grid ──────────────────────────────────────────── */
.portfolio-filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-btn {
  padding: 8px 20px; border-radius: var(--radius-full);
  font-size: 0.85rem; font-weight: 500;
  border: 1.5px solid var(--border-soft); color: var(--text-muted);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--accent); color: var(--accent-light);
  background: var(--accent-dim);
}
.portfolio-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px;
}
.portfolio-card {
  border-radius: var(--radius-lg); overflow: hidden;
  background: var(--surface); border: 1px solid var(--border-soft);
  transition: all var(--transition);
}
.portfolio-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--border); }
.portfolio-thumb {
  aspect-ratio: 16/9; overflow: hidden;
  background: linear-gradient(135deg, var(--surface-2), var(--surface-3));
  display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: 3rem;
}
.portfolio-thumb img { width:100%; height:100%; object-fit:cover; transition: transform 0.5s ease; }
.portfolio-card:hover .portfolio-thumb img { transform: scale(1.06); }
.portfolio-body { padding: 24px; }
.portfolio-cat {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-light); margin-bottom: 8px;
}
.portfolio-body h3 { font-size: 1rem; margin-bottom: 8px; }
.portfolio-body p  { color: var(--text-muted); font-size: 0.88rem; }
.portfolio-metrics {
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border-soft);
}
.metric { text-align: center; }
.metric .val { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; color: var(--accent-light); }
.metric .key { font-size: 0.72rem; color: var(--text-faint); }

/* ── Testimonials ────────────────────────────────────────────── */
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(300px,1fr)); gap: 24px; }
.testimonial-card { background: var(--surface-2); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); padding: 28px; }
.testimonial-stars { color: var(--gold); font-size: 0.9rem; margin-bottom: 14px; }
.testimonial-text  { font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent-dim); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1rem; color: var(--accent-light); flex-shrink: 0;
}
.author-name  { font-weight: 600; font-size: 0.9rem; }
.author-title { font-size: 0.78rem; color: var(--text-faint); }

/* ── Certificates ────────────────────────────────────────────── */
.certs-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 20px; }
.cert-card {
  background: var(--surface-2); border: 1px solid var(--gold-dim);
  border-radius: var(--radius-lg); padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
  transition: all var(--transition);
}
.cert-card:hover { border-color: var(--gold); transform: translateY(-4px); }
.cert-badge { color: var(--gold); font-size: 1.8rem; }
.cert-title { font-weight: 600; font-size: 0.95rem; }
.cert-issuer { font-size: 0.82rem; color: var(--text-faint); }
.cert-verify {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.78rem; color: var(--accent-light); font-weight: 500;
  margin-top: auto;
}

/* ── Contact Form ────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 60px; align-items: start; }
.contact-info h2 { margin-bottom: 16px; }
.contact-info p  { color: var(--text-muted); margin-bottom: 32px; }
.contact-detail  { display: flex; gap: 16px; margin-bottom: 20px; align-items: flex-start; }
.contact-icon    { width: 44px; height: 44px; background: var(--accent-dim); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
.contact-detail strong { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-form { background: var(--surface-2); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); padding: 40px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394A3B8' stroke-width='1.5' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
textarea.form-control { min-height: 130px; resize: vertical; }

/* ── Flash Messages ──────────────────────────────────────────── */
.flash {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px; border-radius: var(--radius);
  margin-bottom: 20px; font-size: 0.9rem; font-weight: 500;
}
.flash--success { background: rgba(16,185,129,0.12); border: 1px solid rgba(16,185,129,0.3); color: #34D399; }
.flash--error   { background: rgba(239,68,68,0.12);  border: 1px solid rgba(239,68,68,0.3);  color: #F87171; }
.flash--warning { background: rgba(245,158,11,0.12); border: 1px solid rgba(245,158,11,0.3); color: #FBBF24; }
.flash__close   { margin-left: auto; opacity: 0.6; font-size: 1.2rem; line-height: 1; }

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  background: var(--surface); border-top: 1px solid var(--border-soft);
  padding: 80px 24px 40px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 60px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; margin: 16px 0 24px; max-width: 280px; }
.footer-socials { display: flex; gap: 10px; }
.social-btn {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--surface-2); border: 1px solid var(--border-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: var(--text-muted); transition: all var(--transition);
}
.social-btn:hover { border-color: var(--accent); color: var(--accent-light); }
.footer-col h4  { font-size: 0.85rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 20px; }
.footer-col li  { margin-bottom: 10px; }
.footer-col a   { font-size: 0.9rem; color: var(--text-muted); transition: color var(--transition); }
.footer-col a:hover { color: var(--accent-light); }
.footer-bottom {
  padding-top: 32px; border-top: 1px solid var(--border-soft);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem; color: var(--text-faint); flex-wrap: wrap; gap: 12px;
}

/* ── Badges ──────────────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 600; }
.badge--success { background: rgba(16,185,129,0.15); color: #34D399; }
.badge--danger  { background: rgba(239,68,68,0.15);  color: #F87171; }
.badge--warning { background: rgba(245,158,11,0.15); color: #FBBF24; }
.badge--info    { background: var(--accent-dim);      color: var(--accent-light); }

/* ── Section Divider ─────────────────────────────────────────── */
.divider { height: 1px; background: var(--border-soft); margin: 0 auto; max-width: var(--max-w); }

/* ── Page Hero (inner pages) ─────────────────────────────────── */
.page-hero {
  padding: 140px 24px 80px;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(99,102,241,0.18) 0%, transparent 70%);
  text-align: center;
}
.page-hero h1 { margin-bottom: 16px; }
.page-hero p  { color: var(--text-muted); max-width: 540px; margin: 0 auto; }
.breadcrumb   { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 0.82rem; color: var(--text-faint); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-light); }

/* ── Scroll Reveal ───────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid  { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 70px 0; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; inset: 72px 0 0;
    background: var(--bg); padding: 24px;
    border-top: 1px solid var(--border-soft); z-index: 999;
  }
  .nav-links.open .nav-cta { display: flex; }
  .hero-actions { flex-direction: column; }
  .audit-form-row, .form-row { grid-template-columns: 1fr; }
  .audit-box { padding: 28px 20px; }
  .hero-stats { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .services-grid, .portfolio-grid, .testimonials-grid, .certs-grid { grid-template-columns: 1fr; }
}

/* ── Flash Messages ──────────────────────────────────────────── */
.flash {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px; border-radius: 12px;
  margin-bottom: 12px; font-size: 0.875rem; font-weight: 500;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
  backdrop-filter: blur(10px);
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.flash--success { background: rgba(16,185,129,0.15); border: 1px solid rgba(16,185,129,0.3); color: #34D399; }
.flash--error   { background: rgba(239,68,68,0.15);  border: 1px solid rgba(239,68,68,0.3);  color: #F87171; }
.flash--warning { background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.3); color: #FBBF24; }
.flash__close   { margin-left: auto; opacity: 0.6; font-size: 1.2rem; line-height: 1; cursor: pointer; background: none; border: none; color: inherit; transition: opacity 0.2s; }
.flash__close:hover { opacity: 1; }
.flash__icon { font-weight: bold; font-size: 1.1rem; }

@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}