/* ============================================
   SSA Digital Solutions — Theme: Warm Minimalism
   (Lohitha Portfolio Design System)
   ============================================ */

:root {
  --color-bg: #F8F6F2;
  --color-bg-alt: #F0EDE8;
  --color-surface: #FFFFFF;
  --color-text: #1E1E1E;
  --color-text-muted: #6B6560;
  --color-accent: #2D5A5A;
  --color-accent-dark: #1E3F3F;
  --color-accent-light: #E8F0F0;
  --color-gold: #C9A84C;
  --color-gold-light: #F5EDD6;
  --color-terracotta: #BC6C4E;
  --color-terracotta-light: #F5E6E0;
  --color-border: #E5E0DA;
  --color-shadow: rgba(0,0,0,0.06);
  --color-shadow-lg: rgba(0,0,0,0.1);
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-w: 1200px;
  --nav-height: 72px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.5s cubic-bezier(0.4,0,0.2,1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-body); background: var(--color-bg); color: var(--color-text); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--color-accent-light); color: var(--color-accent-dark); }

h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 600; line-height: 1.2; color: var(--color-text); }
h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: clamp(1.1rem, 1.5vw, 1.3rem); }
p { color: var(--color-text-muted); line-height: 1.7; }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 0; }
.section-sm { padding: 4rem 0; }

.section-label {
  display: inline-block; font-family: var(--font-body);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase; color: var(--color-accent); margin-bottom: 1rem;
  position: relative;
}
.section-label::after {
  content: ''; display: block; width: 40px; height: 2px;
  background: var(--color-accent); margin-top: 0.5rem;
}
.section-title { margin-bottom: 1rem; }
.section-subtitle { font-size: 1.1rem; max-width: 540px; color: var(--color-text-muted); }
.text-center { text-align: center; }
.text-center .section-label::after { margin-left: auto; margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

.gradient-text {
  background: linear-gradient(135deg, var(--color-accent), var(--color-gold), var(--color-terracotta));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 2rem; font-family: var(--font-body);
  font-size: 0.9rem; font-weight: 500; border-radius: 50px;
  transition: var(--transition); position: relative; overflow: hidden;
  border: none; cursor: pointer;
}
.btn-primary {
  background: var(--color-accent); color: #fff;
  box-shadow: 0 4px 15px rgba(45,90,90,0.3);
}
.btn-primary:hover { background: var(--color-accent-dark); transform: translateY(-2px); box-shadow: 0 6px 25px rgba(45,90,90,0.4); }
.btn-outline {
  background: transparent; color: var(--color-accent);
  border: 2px solid var(--color-accent);
}
.btn-outline:hover { background: var(--color-accent); color: #fff; transform: translateY(-2px); }
.btn-ghost {
  background: var(--color-surface); color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { transform: translateY(-2px); box-shadow: 0 4px 15px var(--color-shadow-lg); }
.btn-sm { padding: 0.55rem 1.5rem; font-size: 0.85rem; }

.glass { background: rgba(255,255,255,0.7); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.8); }

.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-in { opacity: 0; transition: opacity 0.8s ease; }
.fade-in.visible { opacity: 1; }
.scale-in { opacity: 0; transform: scale(0.9); transition: opacity 0.5s ease, transform 0.5s ease; }
.scale-in.visible { opacity: 1; transform: scale(1); }
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes pulse-dot { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.tag {
  display: inline-block; padding: 0.25rem 0.85rem; border-radius: 50px;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.3px;
  background: var(--color-accent-light); color: var(--color-accent);
  border: 1px solid rgba(45,90,90,0.12);
}
.tag-cyan { background: var(--color-accent-light); color: var(--color-accent); border-color: rgba(45,90,90,0.12); }
.tag-emerald { background: var(--color-accent-light); color: var(--color-accent); border-color: rgba(45,90,90,0.12); }
.tag-amber { background: var(--color-gold-light); color: #8B7530; border-color: rgba(201,168,76,0.2); }

/* Navbar */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: var(--transition); padding: 0 1.5rem;
}
.navbar.scrolled {
  background: rgba(248,246,242,0.85);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: var(--nav-height); }
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-heading); font-size: 1.5rem;
  font-weight: 700; color: var(--color-accent);
}
.nav-logo .logo-icon {
  width: 38px; height: 38px; background: var(--color-accent);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-body); font-size: 1rem; font-weight: 800; color: #fff;
}
.nav-links { display: flex; align-items: center; gap: 2.5rem; }
.nav-links a {
  font-size: 0.85rem; font-weight: 500; color: var(--color-text-muted);
  letter-spacing: 0.3px; transition: var(--transition); position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--color-accent); transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--color-accent); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
  padding: 0.55rem 1.5rem; background: var(--color-accent);
  color: #fff !important; border-radius: 50px; font-weight: 600;
}
.nav-cta:hover { background: var(--color-accent-dark) !important; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

.hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  padding: 8px; background: none; border: none; z-index: 1001;
}
.hamburger span { display: block; width: 24px; height: 2px; background: var(--color-text); transition: var(--transition); border-radius: 2px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Page Header */
.page-header {
  padding: 10rem 0 3rem; text-align: center;
  background: linear-gradient(180deg, var(--color-accent-light) 0%, var(--color-bg) 100%);
}
.page-header h1 { margin-bottom: 0.75rem; }
.page-header p { max-width: 560px; margin: 0 auto; }
.page-header .breadcrumb { display: flex; gap: 8px; justify-content: center; font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 1.5rem; }
.page-header .breadcrumb a { color: var(--color-accent); }
.page-header .breadcrumb span { color: var(--color-text-muted); }

/* Footer */
.footer { border-top: 1px solid var(--color-border); padding: 3rem 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; padding-bottom: 2rem; border-bottom: 1px solid var(--color-border); margin-bottom: 2rem; }
.footer-brand .nav-logo { margin-bottom: 1rem; }
.footer-brand p { font-size: 0.9rem; line-height: 1.8; color: var(--color-text-muted); max-width: 340px; }
.footer-social { display: flex; gap: 12px; margin-top: 1.5rem; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--color-surface); border: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); transition: var(--transition); font-size: 0.95rem;
}
.footer-social a:hover { background: var(--color-accent); color: #fff; border-color: transparent; transform: translateY(-3px); }
.footer h4 { font-family: var(--font-body); font-size: 0.95rem; font-weight: 600; color: var(--color-text); margin-bottom: 1.25rem; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a { color: var(--color-text-muted); font-size: 0.88rem; transition: var(--transition); }
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; flex-wrap: wrap; gap: 16px; color: var(--color-text-muted); }

@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-links.active {
    display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(248,246,242,0.98); backdrop-filter: blur(20px);
    padding: 1.5rem 2rem; border-bottom: 1px solid var(--color-border);
    gap: 1.25rem; align-items: flex-start;
  }
  .section { padding: 4rem 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .page-header { padding: 8rem 0 2rem; }
}
@media (max-width: 480px) { .container { padding: 0 1.2rem; } }