/* =============================================================================
   JASYTI UNIVERSAL STYLESHEET (style.css)
   -----------------------------------------------------------------------------
   Purpose: The single authoritative stylesheet for all JASYTI portfolio sites.
   It is structured intentionally by cascade hierarchy to prevent conflicts and
   ensure predictable inheritance.  Each major section begins with a paragraph-
   level explanation instead of line-by-line notes, enabling both readability
   and instructional reuse.  To change the color scheme, edit only :root tokens.
   ============================================================================= */

/* =============================================================================
   0) DESIGN TOKENS — COLORS, TYPE, SPACING, MOTION, CONSTRAINTS
   -----------------------------------------------------------------------------
   Why: These variables define the entire visual system.  Components and layout
   rules never hardcode colors or measurements; they reference these tokens.  
   Changing any token in :root updates the design everywhere instantly.
   ============================================================================= */
:root {
  /* Core Palette */
  --color-primary: #22d3ee;
  --color-primary-ghost: #67e8f9;
  --color-secondary: #1da1f2;
  --color-secondary-ghost: #68bdf2;
  --color-tertiary: #ff3344;
  --color-tertiary-ghost: #f96f7b;
  --color-quaternary: #06f988;
  --color-quaternary-ghost: #99f7cb;

  /*theme colors*/
  --color-dk: #0f172a;
  --color-dk-offset: #111b33;
  --color-lt: #e5e7eb;
  --color-lt-offset: #c8c7c7;

  /*text*/
  --color-text-dk: var(--color-lt);
  --color-text-lt: var(--color-dk);

  /* link system */
  --color-link: #06f988;
  --color-link-onpage: #99f7cb;
  --color-link-active: #cbf3e0;
  --color-link-hover: var(--color-tertiary-ghost);

  /* Typography and rhythm */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --lh-base: 1.5;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;

  /* Shape, depth, motion */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --border-strong: 4px solid var(--color-primary);
  --border-soft: 1px solid rgba(34, 211, 238, 0.25);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;

  /* Layout bounds */
  --container-max: 2560px;
  --content-max: 960px;
}

/* =============================================================================
   1) GLOBAL RESET & ACCESSIBILITY
   -----------------------------------------------------------------------------
   Why: Standardize the box model, remove inconsistent browser defaults, and
   guarantee visible focus states.  This section should never contain branding.
   ============================================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: var(--lh-base);
  color: var(--color-text-dk);
  background-color: var(--color-dk);
  overflow-x: hidden;
}

img,
svg,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

p {
  max-width: 1000px;
}

/* =============================================================================
   2) GLOBAL TYPOGRAPHY
   -----------------------------------------------------------------------------
   Why: Establish visual hierarchy for headings and body text.  The “scanline”
   palette moves from bright cyan (H1) to muted gray-blue (H6) for readability.
   ============================================================================= */
h1,
.h1 {
  font-size: 2.2rem;
  color: var(--color-primary);
  text-shadow: 0 0 8px rgba(34, 211, 238, 0.45);
  margin: 0 0 var(--space-4);
}

h2,
.h2 {
  font-size: 1.9rem;
  color: #1da1f2;
  text-shadow: 0 0 6px rgba(29, 161, 242, 0.35);
  margin: var(--space-4) 0 var(--space-2);
}

h3,
.h3 {
  font-size: 1.6rem;
  color: #67e8f9;
  margin: var(--space-3) 0 var(--space-2);
}

h4,
.h4 {
  font-size: 1.3rem;
  color: #8fd3f4;
  margin: var(--space-3) 0 var(--space-2);
}

h5,
.h5 {
  font-size: 1.1rem;
  color: #dbeafe;
  margin: var(--space-2) 0 var(--space-1);
}

h6,
.h6 {
  font-size: 1rem;
  color: #94a3b8;
  margin: var(--space-2) 0 var(--space-1);
}

.lead {
  font-size: 1.125rem;
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

small,
.caption {
  font-size: 0.875rem;
  color: #8fd3f4;
}

.accent {
  color: var(--color-red);
  font-weight: 600;
}

.subtitle {
  text-align: center;
  font-size: 1.9rem;
  color: #1da1f2;
  text-shadow: 0 0 6px rgba(29, 161, 242, 0.35);
  margin: var(--space-4) 0 var(--space-2);
  margin-bottom: 32px;
}

/* =============================================================================
   3) GLOBAL LINKS — UNIVERSAL LVHFA SYSTEM
   -----------------------------------------------------------------------------
   Why: Define link appearance once for the whole site.  Correct LVHFA order
   (Link → Visited → Hover → Focus → Active) ensures consistent behavior.
   ============================================================================= */
a,
a:link {
  color: var(--color-link);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

a:visited {
  color: var(--color-link-active);
}

a:hover,
a:focus-visible {
  color: var(--color-link-hover);
}

a:active {
  color: var(--color-link-active);
}

a[href^="#"],
a[href^="#"]:visited {
  color: var(--color-link-onpage);
}

a[href^="#"]:hover,
a[href^="#"]:focus-visible {
  color: var(--color-link-hover);
}

/* =============================================================================
   4) LAYOUT FRAME — HEADER, HERO, SIDEBAR, MAIN, FOOTER
   -----------------------------------------------------------------------------
   Why: Provide structural layout using Flexbox.  Header and footer are fixed,
   the sidebar is fixed for persistent navigation, and main scrolls freely.
   ============================================================================= */
.layout {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 65px;
  z-index: 999;
  background: linear-gradient(180deg, #0f172a 0%, #101a30 100%);
  border-bottom: var(--border-soft);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 5px 5px;
}

.navbar-links {
  display: flex;
  gap: 1rem;
}

/* Hero introduction area aligned with main content */
.hero {
  background: var(--color-dk-offset);
  border-bottom: var(--border-soft);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  margin-top: 50px;
  margin-left: 260px;
}

/* Sidebar navigation (fixed) */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  margin-top: 86px;
  /* height of sticky header */
  background-color: var(--color-dk);
  border-right: var(--border-soft);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6) var(--space-4);
  overflow-y: auto;
}

.sidebar h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.sidebar ul {
  list-style: none;
  padding-left: var(--space-4);
  margin: 0;
}

.sidebar li {
  margin-bottom: var(--space-3);
}

/* Main scrollable content area */
.main-content {
  display: flex;
  flex-direction: column;
  margin-left: 260px;
  padding: var(--space-6);
  margin-bottom: 50px;
  flex: 1;
}
.assignment-container {
  padding-bottom: 100px;
  margin-bottom: 50px;
  flex: 1;
}
.discussion {
  margin-top: 0;
  margin-left: 260px;
  padding-top: 0;
  flex: 1;
}

/* Footer fixed at viewport bottom, aligned with main column */
.footer {
  display: flex;
  justify-content: flex-end;
  text-align: center;
  position: fixed;
  bottom: 0;
  left: 260px;
  right: 0;
  padding-right: 20px;
  padding-top: 5px;
  padding-bottom: 5px;
  background-color: var(--color-dk);
  border-top: var(--border-soft);
  color: var(--color-primary-ghost);
  text-align: Right;
  box-shadow: var(--shadow-sm);
}

.footer-nomarg {
  position: fixed;
  width: 100%;
  bottom: 0;
  right: 0;
  background-color: var(--color-dk);
  border-top: var(--border-soft);
  color: var(--color-primary-ghost);
  box-shadow: var(--shadow-sm);
}

.splash-footer {
  display: flex;
  justify-content: flex-end;
  position: fixed;
  bottom: 0;
  width: 100%;
  background-color: var(--color-dk);
  border-top: var(--border-soft);
  color: var(--color-primary-ghost);
  text-align: center;
  padding-left: 1rem;
  padding-right: 1rem;
  box-shadow: var(--shadow-sm);
}

body {
  padding-bottom: 80px;
}

/* =============================================================================
   5) COMPONENTS — CARDS, SCREENSHOTS, TOOLBAR, BUTTONS
   -----------------------------------------------------------------------------
   Why: Self-contained building blocks.  They inherit layout but not link color,
   so they never override the global link system accidentally.
   ============================================================================= */
.card {
  max-width: 1000px;
  margin-bottom: 50px;
  background-color: #111827;
  border: var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
}

.card-header {
  color: var(--color-primary);
}

.card-body {
  color: var(--color-text);
}

.card-footer {
  border-top: var(--border-soft);
  padding-top: var(--space-3);
  padding-right: var(--space-3);
  text-align: right;
  color: var(--color-primary-ghost);
}

.discussion {
  max-width: 1000px;
  margin-left: 0;
  margin-bottom: 50px;
  background-color: #111827;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Screenshot presentation */
.screenshot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.screenshot img {
  max-width: 1000px;
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.screenshot figcaption {
  color: var(--color-primary-ghost);
  font-size: 0.9rem;
  text-align: center;
}

/* Toolbar container for grouped controls */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--color-bg-offset);
  border: var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* Button system */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-base),
    color var(--transition-base), border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.btn-primary {
  background-color: #0060c7;
  color: #ffffff;
  border-color: #0060c7;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-link);
  border-color: var(--color-link);
  box-shadow: 0 0 12px var(--color-green);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-ghost);
  border-color: var(--color-primary);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  color: var(--color-white);
  border-color: var(--color-primary-ghost);
  box-shadow: 0 0 10px var(--color-primary);
}

.btn-danger {
  background-color: var(--color-red);
  color: #140a0a;
  border-color: var(--color-red);
}

.btn-danger:hover,
.btn-danger:focus-visible {
  background-color: #ff5260;
  border-color: #ff5260;
  box-shadow: 0 0 12px rgba(255, 51, 68, 0.65);
}

.btn-disabled {
  opacity: 0.5;
  pointer-events: none;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.button-section {
  padding: 32px;
  background-color: var(--color-lt-offset);
  color: var(--color-dk);
  font-size: 24px;
  border: 1px solid rgba(0, 0, 0, 0.25);
  border-radius: 12px;
}
.button-section h2 {
  color: var(--color-dk);
  margin-bottom: 24px;
  font-weight: 500;
}

.button-01 {
  background-color: #0066cc;
  color: #ffffff;
  padding: 16px 32px;
  border: 2px solid #0066cc;
  transition: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease;
}

.button-01:hover {
  background-color: #ffffff;
  color: #0066cc;
  border-color: #0066cc;
}

.button-02 {
  background-color: #0e6027;
  color: #ffffff;
  padding: 16px 32px;
  border: 2px solid #0e6027;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.button-02:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* =============================================================================
   6) CONTEXT OVERRIDES — HEADER & SIDEBAR LINKS
   -----------------------------------------------------------------------------
   Why: Scope color overrides to their regions.  Header uses cyan; sidebar uses
   the electric-green system but reapplies it here to ensure dominance in cascade.
   ============================================================================= */

/* Header (navbar) links stay cyan by design */
.navbar-links a {
  color: var(--color-primary-ghost);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

.navbar-links a:hover,
.navbar-links a:focus-visible {
  background-color: rgba(34, 211, 238, 0.12);
  color: var(--color-white);
}

/* Sidebar navigation links (explicitly last in cascade) */
.sidebar a,
.sidebar a:link {
  color: var(--color-link);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.sidebar a:visited {
  color: var(--color-link-active);
}

.sidebar a:hover,
.sidebar a:focus-visible {
  color: var(--color-link-hover);
}

.sidebar a:active {
  color: var(--color-link-active);
}

/* =============================================================================
   7) UTILITIES & RESPONSIVE ADAPTATION
   -----------------------------------------------------------------------------
   Why: Final layer of small, composable helpers and breakpoints.  They adjust
   layout without changing visual hierarchy or brand logic.
   ============================================================================= */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-block: var(--space-6);
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-4);
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.flex-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .container {
    padding-inline: var(--space-4);
  }

  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    margin-top: 0;
  }

  .main-content,
  .hero,
  .footer {
    margin-left: 0;
    left: 0;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding-inline: var(--space-4);
  }

  .toolbar {
    gap: var(--space-2);
  }

  .card {
    padding: var(--space-4);
  }
}
/*
 * This block was previously experimental and shouldn't be active.
 * It had syntax errors that broke formatting.
 * If you need it later, re-enable safely.
 */

/* html, body {

/* ======================================================
   1. GLOBAL RESET & PAGE SETUP
 {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  font-family: system-ui, sans-serif;
  background-color: #fff;
  overflow: hidden; /* Locks scroll during intro video 
}

*/
/* ======================================================
   2. INTRO VIDEO STAGE
====================================================== */

#stage {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 1000;
  overflow: hidden;
}

#intro {
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  display: block;
}

/* ======================================================
   3. Dragon SPLASH (Post Video Banner)
====================================================== */

#dragon {
  width: 100vw;
  height: 25vh;
  /* Takes up 25% of viewport height */
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: black;
  overflow: hidden;
  position: relative;
}

#dragon img {
  width: 100%;
  height: auto;
  display: block;
}

/* dragon overlay text */
.dragon-ui {
  position: absolute;
  bottom: 20px;
  width: 100%;
  text-align: center;
  color: white;
  z-index: 10;
}

.dragon-title {
  font-size: 2rem;
  font-weight: bold;
  color: #fff;
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.7);
  margin: 0;
  padding: 0 20px;
}

/* ======================================================
   4. MAIN CONTENT AREA (Visible After Video)
====================================================== */

/* Unlock scroll after video */
body.show-dragon {
  overflow: auto;
}

/* ======================================================
   5. RADIO BUTTON NAVIGATION (Platform Selector)
====================================================== */
.dragon-topnav {
  margin-top: 20px;
  text-align: center;
}

/* Navigation buttons for other actions */
.navigation {
  text-align: center;
  margin-top: 20px;
}

.navigation button {
  margin: 10px;
  padding: 12px 24px;
  font-size: 1rem;
  background-color: #222;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.navigation button:hover {
  background-color: #444;
}

.skip-message {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1rem;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.85);
  color: #000;
  border-radius: 6px;
  font-weight: bold;
  z-index: 1001;
  text-align: center;
}

.dragon-topnav label {
  margin: 0 10px;
  font-weight: 500;
  font-size: 1rem;
  color: #222;
}

.dragon-topnav input[type="radio"] {
  margin-right: 6px;
}

.dragon-buttons {
  text-align: center;
  margin-top: 30px;
}

.button-red {
  background-image: linear-gradient(-180deg, #d92323, #aa1a1a);
  /* your red gradient */
  border-radius: 6px;
  box-shadow: rgba(0, 0, 0, 0.1) 0 2px 4px;
  color: #ffffff;
  cursor: pointer;
  display: inline-block;
  font-family: Inter, system-ui, sans-serif;
  height: 42px;
  line-height: 42px;
  padding: 0 24px;
  text-align: center;
  user-select: none;
  white-space: nowrap;
  border: none;
  transition: box-shadow 0.2s ease, transform 0.1s ease;
  margin: 10px;
}

.button-red:hover {
  box-shadow: rgba(217, 35, 35, 0.6) 0 3px 10px;
  transform: translateY(-1px);
}

/* ======================================================
   6. EXTRA COMPONENTS
====================================================== */

/* Navigation buttons for other actions */
.navigation {
  text-align: center;
  margin-top: 20px;
}

.navigation button {
  margin: 10px;
  padding: 12px 24px;
  font-size: 1rem;
  background-color: #222;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.navigation button:hover {
  background-color: #444;
}

.skip-message {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1rem;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.85);
  color: #000;
  border-radius: 6px;
  font-weight: bold;
  z-index: 1001;
  text-align: center;
}