/* =========================================================
   CUSTOM SOFTWARE DEVELOPMENT - LIGHT THEME
   ========================================================= */

/* Use global Frugalnova theme variables for consistency */
:root {
  --csd-bg: var(--clr-surface);
  --csd-bg-alt: var(--clr-surface-2);
  --csd-card: #ffffff;
  --csd-card-border: var(--clr-border);
  --csd-accent: var(--clr-accent);
  --csd-accent-light: var(--clr-accent-pale);
  --csd-primary: var(--clr-primary);
  --csd-text: var(--clr-text);
  --csd-text-muted: var(--clr-text-muted);
  --csd-shadow: 0 4px 20px rgba(26,46,68,0.06);
  --csd-shadow-hover: 0 15px 35px rgba(26,46,68,0.12);
}

body[data-back-url] {
  background-color: var(--csd-bg);
  color: var(--csd-text);
}

/* ---------------------------------------------------------
   1. MINIMAL HERO SECTION (.csd-hero)
--------------------------------------------------------- */
.csd-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 160px 5% 100px;
  overflow: hidden;
  background: radial-gradient(circle at top, var(--csd-accent-light) 0%, var(--csd-bg) 70%);
  text-align: center;
}

.csd-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../assets/images/grid-bg.svg') repeat;
  opacity: 0.05;
  z-index: 0;
  pointer-events: none;
}

.csd-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}

.csd-eyebrow {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  border-radius: 30px;
  background: var(--csd-card);
  border: 1px solid var(--csd-card-border);
  color: var(--csd-accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 2rem;
  box-shadow: var(--csd-shadow);
}

.csd-hero-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(3rem, 5vw, 4.5rem);
  font-weight: 800;
  color: var(--csd-primary);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.csd-hero-title em {
  font-style: normal;
  color: var(--csd-accent);
}

.csd-hero-desc {
  font-size: 1.2rem;
  color: var(--csd-text-muted);
  line-height: 1.6;
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.csd-hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.csd-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.2rem;
  background: var(--csd-primary);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm, 6px);
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(26,46,68,0.2);
}
.csd-btn-primary:hover {
  background: var(--clr-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26,46,68,0.3);
}

.csd-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.2rem;
  background: transparent;
  color: var(--csd-primary);
  font-weight: 600;
  border-radius: var(--radius-sm, 6px);
  text-decoration: none;
  border: 1.5px solid var(--csd-primary);
  transition: all 0.3s ease;
}
.csd-btn-ghost:hover {
  background: var(--csd-primary);
  color: #fff;
}

/* ---------------------------------------------------------
   2. TAILORED BUSINESS SOFTWARE (.csd-tailored)
--------------------------------------------------------- */
.csd-section {
  padding: 100px 5%;
  position: relative;
  z-index: 2;
}

.csd-section-inner {
  max-width: 1300px;
  margin: 0 auto;
}

.csd-tailored .csd-section-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.csd-section-label {
  color: var(--csd-accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: inline-block;
  background: var(--csd-accent-light);
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
}

.csd-section-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2.2rem, 3.5vw, 3.2rem);
  color: var(--csd-primary);
  margin-bottom: 1.5rem;
  line-height: 1.15;
  font-weight: 700;
}

.csd-section-desc {
  color: var(--csd-text-muted);
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.csd-feature-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.csd-feature-item {
  display: flex;
  gap: 1.2rem;
}

.csd-feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: var(--csd-card);
  border: 1px solid var(--csd-card-border);
  box-shadow: var(--csd-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--csd-accent);
  font-size: 1.6rem;
  flex-shrink: 0;
}

.csd-feature-text h4 {
  color: var(--csd-primary);
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
}

.csd-feature-text p {
  color: var(--csd-text-muted);
  font-size: 1rem;
  line-height: 1.5;
}

/* Visual Software Diagram */
.csd-diagram {
  background: var(--csd-bg-alt);
  border: 1px solid var(--csd-card-border);
  border-radius: 20px;
  padding: 4rem 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.02);
}

.csd-diagram::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%; width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent 0%, var(--csd-accent-light) 30%, transparent 50%);
  animation: spinGlow 12s linear infinite;
  opacity: 0.6;
  z-index: 0;
}

@keyframes spinGlow {
  100% { transform: rotate(360deg); }
}

.csd-diagram-core {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  align-items: center;
}

.csd-block {
  background: var(--csd-card);
  border: 1px solid var(--csd-card-border);
  padding: 1.2rem 2.5rem;
  border-radius: 10px;
  color: var(--csd-primary);
  font-weight: 600;
  box-shadow: var(--csd-shadow);
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 85%;
  justify-content: center;
  position: relative;
  font-size: 1.1rem;
}

.csd-block i {
  color: var(--csd-accent);
  font-size: 1.6rem;
}

.csd-line {
  width: 2px;
  height: 45px;
  background: linear-gradient(to bottom, var(--csd-accent), transparent, var(--csd-accent));
  position: absolute;
  bottom: -47px;
}

/* ---------------------------------------------------------
   3. ENTERPRISE SYSTEM ARCHITECTURE (.csd-architecture)
--------------------------------------------------------- */
.csd-architecture {
  background: var(--csd-bg-alt);
  border-top: 1px solid var(--csd-card-border);
  border-bottom: 1px solid var(--csd-card-border);
}

.csd-arch-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.csd-arch-image-wrap {
  margin-bottom: 5rem;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--csd-shadow-hover);
  border: 1px solid var(--csd-card-border);
  background: var(--csd-card);
  padding: 10px;
}

.csd-arch-image-wrap img {
  border-radius: 12px;
  width: 100%;
}

.csd-arch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.csd-arch-card {
  background: var(--csd-card);
  border: 1px solid var(--csd-card-border);
  border-radius: 16px;
  padding: 3rem 2rem;
  text-align: center;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  box-shadow: var(--csd-shadow);
}

.csd-arch-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--csd-shadow-hover);
  border-color: rgba(181, 36, 106, 0.2);
}

.csd-arch-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--csd-accent);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.csd-arch-card:hover::after {
  transform: scaleX(1);
}

.csd-arch-icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 1.8rem;
  background: var(--csd-accent-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  color: var(--csd-accent);
}

.csd-arch-card h3 {
  color: var(--csd-primary);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.csd-arch-card p {
  color: var(--csd-text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ---------------------------------------------------------
   4. INDUSTRY SPECIFIC (.csd-industries)
--------------------------------------------------------- */
.csd-industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.csd-ind-card {
  background: var(--csd-card);
  border: 1px solid var(--csd-card-border);
  border-radius: 16px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  transition: all 0.3s;
  box-shadow: var(--csd-shadow);
  cursor: pointer;
}

.csd-ind-card:hover {
  background: var(--csd-bg-alt);
  border-color: rgba(181, 36, 106, 0.3);
  box-shadow: var(--csd-shadow-hover);
}

.csd-ind-icon {
  font-size: 2.8rem;
  color: var(--csd-accent);
}

.csd-ind-card h3 {
  color: var(--csd-primary);
  font-size: 1.35rem;
}

.csd-ind-card p {
  color: var(--csd-text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ---------------------------------------------------------
   5. DEVELOPMENT PROCESS (.csd-process)
--------------------------------------------------------- */
.csd-process {
  background: var(--csd-bg-alt);
  overflow: hidden;
  border-top: 1px solid var(--csd-card-border);
}

.csd-timeline {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
  position: relative;
  max-width: 850px;
  margin: 4rem auto 0;
  padding-left: 2.5rem;
}

.csd-timeline::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 15px;
  width: 2px;
  background: rgba(181, 36, 106, 0.15); /* Light pink timeline track */
}

.csd-step {
  position: relative;
  background: var(--csd-card);
  border: 1px solid var(--csd-card-border);
  padding: 2.5rem;
  border-radius: 16px;
  margin-left: 2rem;
  box-shadow: var(--csd-shadow);
  transition: transform 0.3s ease;
}

.csd-step:hover {
  transform: translateX(5px);
}

.csd-step-dot {
  position: absolute;
  left: -3.2rem;
  top: 2.8rem;
  width: 24px;
  height: 24px;
  background: var(--csd-card);
  border: 4px solid var(--csd-accent);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 0 0 6px var(--csd-bg-alt);
}

.csd-step h3 {
  color: var(--csd-primary);
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.csd-step h3 i {
  color: var(--csd-accent);
}

.csd-step-num {
  font-family: 'Outfit', sans-serif;
  color: var(--csd-bg-alt); /* Light gray for subtle large number */
  -webkit-text-stroke: 1px var(--csd-card-border);
  font-size: 4.5rem;
  font-weight: 800;
  position: absolute;
  right: 1.5rem;
  top: 1rem;
  line-height: 1;
  pointer-events: none;
}

.csd-step p {
  color: var(--csd-text-muted);
  line-height: 1.7;
  font-size: 1.05rem;
}

/* ---------------------------------------------------------
   RESPONSIVE
--------------------------------------------------------- */
@media (max-width: 1024px) {
  .csd-tailored .csd-section-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .csd-feature-item {
    text-align: left;
  }
  
  .csd-arch-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .csd-hero {
    padding: 130px 5% 80px;
  }
  .csd-hero-title {
    font-size: 2.6rem;
  }
  .csd-arch-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------------------------------------------------------
   6. CTA SECTION (.csd-cta)
--------------------------------------------------------- */
.csd-cta {
  padding: 100px 5%;
  background: var(--csd-bg);
  text-align: center;
  position: relative;
}

.csd-cta-inner {
  max-width: 800px;
  margin: 0 auto;
  background: var(--csd-card);
  border: 1px solid var(--csd-card-border);
  padding: 4rem 2rem;
  border-radius: 20px;
  box-shadow: var(--csd-shadow);
}

.csd-cta-label {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  border-radius: 30px;
  background: var(--csd-accent-light);
  color: var(--csd-accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.csd-cta-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2.2rem, 3.5vw, 3.2rem);
  color: var(--csd-primary);
  margin-bottom: 1.5rem;
  line-height: 1.15;
  font-weight: 700;
}

.csd-cta-title em {
  font-style: normal;
  color: var(--csd-accent);
}

.csd-cta-desc {
  color: var(--csd-text-muted);
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.csd-cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

@media (max-width: 768px) {
  .csd-cta-inner {
    padding: 3rem 1.5rem;
  }
  .csd-cta-actions {
    flex-direction: column;
  }
}