/* ===========================
   DESIGN TOKENS
   =========================== */

:root {
  --color-bg:           #020039;
  --color-primary:      #5e55ff;
  --color-accent:       #99f069;
  --color-danger:       #fc434b;
  --color-text:         #f9f8f2;
  --color-text-soft:    #feadaf;
  --color-text-white:   #ffffff;

  --color-card-bg:           rgba(2, 0, 57, 0.6);
  --color-card-bg-dark:      rgba(2, 0, 57, 0.8);
  --color-primary-tint-10:   rgba(94, 85, 255, 0.10);
  --color-primary-tint-20:   rgba(94, 85, 255, 0.20);
  --color-primary-tint-30:   rgba(94, 85, 255, 0.30);
  --color-primary-tint-50:   rgba(94, 85, 255, 0.50);
  --color-accent-tint-20:    rgba(153, 240, 105, 0.20);

  --light-bg:           #f6f5f1;
  --light-ink:          #122c5b;
  --light-ink-2:        #3a3d4a;
  --light-muted:        #8a8ea0;

  --font-head:          'DM Serif Display', Georgia, serif;
  --font-body:          'Rubik', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}


/* ===========================
   GLOBAL
   =========================== */


html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  margin: 0;
  padding-top: 72px;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Soft brand-color glows behind everything */
body::before {
  content: '';
  position: fixed;
  top: -20%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(94, 85, 255, 0.18) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  bottom: -20%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(153, 240, 105, 0.10) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }


/* ===========================
   HEADER & NAVIGATION
   (same structure as home, dark variant)
   =========================== */

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  background: rgba(2, 0, 57, 0.6);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 5vw;
}

.logo {
  font-family: 'Offside', sans-serif;
  font-weight: bold;
  font-size: 1.4rem;
  letter-spacing: -0.5px;
  color: var(--color-text-white);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--color-text-white);
  cursor: pointer;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  align-items: center;
}

nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 18px;
  border-radius: 100px;
  letter-spacing: 0.02em;
  transition: all 0.2s;
}

nav a:hover {
  background: var(--color-primary);
  color: #fff;
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }

  nav ul {
    position: fixed;
    top: 72px;
    right: -100%;
    width: 100%;
    height: calc(100vh - 72px);
    background: var(--color-bg);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 50px;
    transition: right 0.3s ease;
    gap: 10px;
  }
  nav ul.active { right: 0; }
  nav li { margin: 10px 0; }
  nav a { font-size: 1.1rem; }
}


/* ===========================
   LAYOUT
   =========================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}


/* ===========================
   BACK LINK
   =========================== */

.back-link {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-text-white);
  padding: 12px 24px;
  border-radius: 100px;
  text-decoration: none;
  font-weight: 500;
  margin: 40px 0 20px;
  transition: background 0.15s;
}
.back-link:hover { background: #4e45fc; }


/* ===========================
   HEADINGS
   =========================== */

h1 {
  font-family: var(--font-head);
  font-weight: 400;
  color: var(--color-text-white);
  margin: 0 0 24px;
  line-height: 1.1;
}

h2 {
  font-size: 2.2em;
  font-weight: 500;
  color: var(--color-accent);
  margin: 0 0 24px;
  letter-spacing: -0.5px;
}

h3 {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text-white);
  margin: 0 0 8px;
}

h4 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-accent);
}

p {
  font-size: 1em;
  line-height: 1.7;
  color: var(--color-text-soft);
  margin: 0 0 16px;
}


/* ===========================
   HERO
   =========================== */

.project-overview {
  padding: 30px 0 80px;
}
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.case-tag {
  display: inline-block;
  background: var(--color-accent-tint-20);
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.case-h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  letter-spacing: -1px;
}
.case-h1 .accent {
  color: var(--color-accent);
  font-style: italic;
}

.overview-text p {
  font-size: 1.05em;
  max-width: 480px;
}

.case-buttons {
  display: flex;
  gap: 14px;
  margin-top: 32px;
  flex-wrap: wrap;
}


/* ===========================
   BUTTONS
   =========================== */

.btn-case {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.15s, background 0.15s, border-color 0.15s, color 0.15s;
  cursor: pointer;
  font-family: var(--font-body);
}
.btn-case:hover { transform: translateY(-2px); }

.btn-case-primary {
  background: var(--color-primary);
  color: var(--color-text-white);
}
.btn-case-primary:hover { background: #4e45fc; }

.btn-case-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-primary-tint-30);
}
.btn-case-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}


/* ===========================
   CODE CARD
   =========================== */

.hero-mockup {
  width: 100%;
}

.code-card {
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--color-primary-tint-30);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 20px 60px var(--color-primary-tint-30);
}
.code-header {
  background: rgba(255, 255, 255, 0.04);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--color-primary-tint-20);
}
.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.code-dot-red { background: var(--color-danger); }
.code-dot-yellow { background: #ffc857; }
.code-dot-green { background: var(--color-accent); }
.code-title {
  margin-left: 12px;
  font-size: 12px;
  color: var(--color-text-soft);
  font-family: 'SF Mono', Menlo, Consolas, monospace;
}
.code-body {
  margin: 0;
  padding: 20px;
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre-wrap;
  overflow-x: auto;
}
.c-key { color: var(--color-primary); font-weight: 600; }
.c-str { color: var(--color-accent); }
.c-cmt { color: var(--color-text-soft); opacity: 0.6; font-style: italic; }


/* ===========================
   SECTIONS
   =========================== */

.case-section {
  padding: 60px 0;
}

.section-intro {
  font-size: 1em;
  margin: 0 0 32px;
  max-width: 560px;
}


/* ===========================
   KEY FEATURES
   =========================== */

.problem-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.problem-item {
  background: var(--color-primary-tint-10);
  border: 1px solid var(--color-primary-tint-20);
  border-radius: 18px;
  padding: 28px;
  transition: border-color 0.15s, transform 0.15s;
}
.problem-item:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.problem-icon {
  font-size: 28px;
  margin-bottom: 12px;
}
.problem-item h3 {
  color: var(--color-text-white);
}
.problem-item p {
  margin: 0;
  font-size: 0.95em;
}


/* ===========================
   UI MOCKUPS
   =========================== */

.ui-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.ui-card {
  background: var(--color-primary-tint-10);
  border: 1px solid var(--color-primary-tint-20);
  border-radius: 18px;
  padding: 24px;
}
.ui-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 16px;
}

/* Animal card mock */
.mock-animal {
  background: var(--light-bg);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 14px;
  color: var(--light-ink);
}
.mock-img {
  width: 80px;
  height: 80px;
  border-radius: 10px;
  background: linear-gradient(135deg, #b8a3ff, var(--color-primary));
  position: relative;
}
.mock-img::after {
  content: '🐾';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.mock-info { min-width: 0; }
.mock-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.mock-name { font-weight: 700; font-size: 16px; color: var(--light-ink); }
.mock-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.mock-badge-green {
  background: rgba(34, 139, 87, 0.15);
  color: #1d6c44;
  border: 1px solid rgba(34, 139, 87, 0.3);
}
.mock-meta {
  font-size: 12px;
  color: var(--light-muted);
  margin-bottom: 6px;
}
.mock-tags {
  display: flex;
  gap: 4px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.mock-tag {
  background: rgba(94, 85, 255, 0.1);
  color: var(--color-primary);
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 100px;
}
.mock-desc {
  font-size: 12px;
  color: var(--light-ink-2);
  line-height: 1.5;
  margin: 0;
}
.mock-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  margin-top: 4px;
}
.mock-btn {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 7px 16px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
}
.mock-btn-block { width: 100%; }

/* Profile mock */
.mock-profile {
  background: var(--light-bg);
  border-radius: 14px;
  padding: 18px;
  color: var(--light-ink);
}
.mock-profile-header {
  display: flex;
  gap: 12px;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  margin-bottom: 14px;
}
.mock-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.mock-profile-name { font-weight: 700; font-size: 14px; color: var(--light-ink); }
.mock-profile-role {
  font-size: 10px;
  color: var(--light-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.mock-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 12px;
}
.mock-label { color: var(--light-muted); font-weight: 600; }
.mock-value { color: var(--light-ink); }
.mock-profile .mock-btn { margin-top: 12px; padding: 9px; }

/* Users list mock */
.mock-users {
  background: var(--light-bg);
  border-radius: 14px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mock-user-row {
  background: white;
  border-radius: 10px;
  padding: 10px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.mock-user-info { flex: 1; min-width: 0; }
.mock-user-name { font-weight: 700; font-size: 13px; color: var(--light-ink); }
.mock-user-meta { font-size: 11px; color: var(--light-muted); }

/* Stats mock */
.mock-stats {
  background: var(--light-bg);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.mock-stat {
  background: white;
  padding: 18px 10px;
  border-radius: 12px;
  text-align: center;
}
.mock-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}
.mock-stat-label {
  font-size: 10px;
  color: var(--light-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}


/* ===========================
   TECH BADGES & GRID
   =========================== */

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 28px;
}
.badge {
  background: var(--color-primary-tint-10);
  border: 1px solid var(--color-primary-tint-20);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.8rem;
  padding: 7px 14px;
  border-radius: 100px;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.tech-item {
  background: var(--color-primary-tint-10);
  border: 1px solid var(--color-primary-tint-20);
  border-radius: 14px;
  padding: 20px;
}
.tech-item h4 {
  font-family: var(--font-body);
}
.tech-item p {
  margin: 0;
  font-size: 0.85em;
  line-height: 1.6;
}


/* ===========================
   CONTACT
   =========================== */

.contact-cta-section {
  text-align: center;
  padding: 80px 0;
}
.contact-cta-section .section-intro {
  margin-left: auto;
  margin-right: auto;
}
.case-contact-rows {
  display: flex;
  gap: 18px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 30px;
}
.case-contact-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-accent);
  font-size: 0.95em;
  padding: 14px 24px;
  border: 1px solid var(--color-primary-tint-20);
  border-radius: 100px;
  transition: background 0.15s, border-color 0.15s;
}
.case-contact-row:hover {
  background: var(--color-primary-tint-10);
  border-color: var(--color-accent);
}
.contact-icon { font-size: 1.2em; }


/* ===========================
   FOOTER
   =========================== */

footer {
  background: var(--color-bg);
  padding: 30px 0;
  margin-top: 60px;
  border-top: 1px solid var(--color-primary-tint-20);
  text-align: center;
}
.footer-content p {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  color: var(--color-text);
  font-size: 0.9em;
  opacity: 0.6;
}


/* ===========================
   RESPONSIVE
   =========================== */

@media (max-width: 800px) {
  .overview-grid { grid-template-columns: 1fr; gap: 40px; }
  .problem-list, .ui-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr 1fr; }
  h2 { font-size: 1.8em; }
}

@media (max-width: 500px) {
  .tech-grid { grid-template-columns: 1fr; }
  .case-buttons { flex-direction: column; }
  .btn-case { width: 100%; text-align: center; }
}