/*
  styles.css – CodeFlow layout and styling.
  Core: Landing page (header, hero, create/join), in-app (editor, output panel, buttons), and feedback page.
  Uses Bootstrap for grid/icons; custom rules for colors, spacing, and responsive behavior.
*/

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* ----- Landing page (reference-style) ----- */
.landing-page {
  background-color: #f5f5f5;
  min-height: 100vh;
}

.landing-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background-color: #f5f5f5;
  border-bottom: none;
}

.landing-header-brand {
  font-size: 1.1rem;
  font-weight: 400;
  color: #000;
  text-decoration: none;
  cursor: pointer;
}

.landing-header-brand:hover {
  color: #000;
  text-decoration: none;
}

.landing-header-status {
  font-size: 0.875rem;
  color: #6c757d;
  font-weight: 400;
}

.main {
  min-height: calc(100vh - 52px);
}

/* Landing: each section centered and on its own line */
.landing {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4rem 1.5rem 5rem;
  width: 100%;
}

.landing-section {
  width: 100%;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 4.5rem;
}

.landing-section:last-child {
  margin-bottom: 0;
}

.landing-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: #212529;
  text-align: center;
  margin-bottom: 1rem;
}

/* Hero: big title, tagline, CTA */
.landing-hero {
  text-align: center;
}

.landing-hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: #000;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.landing-hero-tagline {
  font-size: 1.1rem;
  color: #495057;
  margin-bottom: 2rem;
  line-height: 1.6;
  max-width: 32ch;
  margin-left: auto;
  margin-right: auto;
}

.landing-cta {
  display: inline-block;
  margin-top: 0.25rem;
  padding: 0.6rem 1.25rem;
  background-color: #000;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  transition: background-color 0.2s, box-shadow 0.2s;
}

.landing-cta:hover {
  background-color: #212529;
  color: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Instructions: process steps in a horizontal row, section centered */
.landing-process-wrap {
  text-align: center;
  padding: 1rem 0;
}

.landing-process {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 1rem;
}

.landing-process-step {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: #fff;
  border: 1px solid #dee2e6;
  border-radius: 999px;
  font-size: 0.9rem;
  color: #212529;
}

.landing-process-step-done {
  border-color: rgba(25, 135, 84, 0.3);
}

.landing-process-icon {
  font-size: 1rem;
}

.landing-process-arrow {
  color: #adb5bd;
  font-size: 0.9rem;
}

/* What you get: feature cards, section centered */
.landing-cards {
  max-width: 900px;
  text-align: center;
  padding-top: 1rem;
  padding-bottom: 4rem;
}

.landing-cards-inner {
  width: 100%;
  margin: 0 auto;
  text-align: left;
}

.landing-card .card-body {
  padding: 1.5rem;
}

.landing-card-icon {
  display: inline-block;
  font-size: 1.25rem;
  color: #495057;
  margin-bottom: 0.75rem;
}

.landing-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: #000;
  margin-bottom: 0.35rem;
}

.landing-card-text {
  font-size: 0.9rem;
  color: #6c757d;
  margin: 0;
  line-height: 1.45;
}

.editor-section {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.editor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

#editor {
  flex: 1;
  width: 100%;
  resize: none;
}

.output-section {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* App-only: shareable link, run status, user count */
.shareable-link-input {
  width: 220px;
  font-size: 0.8rem;
  background-color: #f8f9fa;
}

.run-status-label {
  min-width: 3.5rem;
}

.output-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  overflow: auto;
}

.output-block {
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

.output-stderr {
  color: #b91c1c;
}

.output-exit {
  color: #6c757d;
}

#output {
  height: 100%;
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

/* Make the app editor/output cards fill the available height equally */
#app {
  display: flex;
  flex-direction: column;
  height: 100%;
}

#app .row.g-3 {
  flex: 1;
}

.editor-section.card,
.output-section.card {
  height: 100%;
}

.editor-section .card-body,
.output-section .card-body {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.editor-section textarea {
  flex: 1;
}

/* ----- Feedback page (centered message + CTA) ----- */
.feedback-main {
  display: flex;
  align-items: center;
  justify-content: center;
}

.feedback-section {
  text-align: center;
  max-width: 400px;
  padding: 2rem 1.5rem;
}

.feedback-message {
  font-size: 1.1rem;
  color: #495057;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.feedback-cta {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  background-color: #000;
  color: #fff;
  border-radius: 8px;
  font-weight: 500;
  text-decoration: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  transition: background-color 0.2s, box-shadow 0.2s;
}

.feedback-cta:hover {
  background-color: #212529;
  color: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.feedback-back {
  margin-top: 1.5rem;
  margin-bottom: 0;
}

.feedback-back-link {
  font-size: 0.9rem;
  color: #6c757d;
  text-decoration: none;
}

.feedback-back-link:hover {
  color: #212529;
}

/* Fixed feedback button: bottom right, opens form in new tab */
.feedback-fab {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  padding: 0.5rem 1rem;
  background-color: #000;
  color: #fff;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: background-color 0.2s, box-shadow 0.2s;
  z-index: 1000;
}

.feedback-fab:hover {
  background-color: #212529;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

/* =============================================================================
   MOBILE RESPONSIVE STYLES
   Breakpoints: 576px (phones), 768px (tablets). Adjusts layout, spacing, and
   touch targets so the landing page and app work well on small screens.
   ============================================================================= */

/* ---- Small phones and narrow viewports (up to 576px) ---- */
@media (max-width: 576px) {
  /* Landing: reduce vertical padding so content fits without excessive scroll */
  .landing {
    padding: 2rem 1rem 3rem;
  }

  .landing-section {
    margin-bottom: 2.5rem;
  }

  /* Hero: slightly smaller title on very small screens (clamp handles most) */
  .landing-hero-title {
    font-size: 1.75rem;
  }

  .landing-hero-tagline {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }

  .landing-cta {
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    /* Larger tap target for touch devices */
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Process steps: stack vertically on very small screens so they don’t wrap awkwardly */
  .landing-process {
    flex-direction: column;
    gap: 0.5rem;
  }

  .landing-process-arrow {
    transform: rotate(90deg);
  }

  /* Cards: ensure consistent spacing when stacked */
  .landing-cards {
    padding-bottom: 2rem;
  }

  .landing-card .card-body {
    padding: 1.25rem;
  }

  /* Header: tighter padding on mobile */
  .landing-header {
    padding: 0.75rem 1rem;
  }

  .landing-header-brand {
    font-size: 1rem;
  }

  .landing-header-status {
    font-size: 0.8rem;
  }

  /* App toolbar: stack into a single column so room label, link, copy, and user count don’t overflow */
  #app .row.mb-3 {
    flex-direction: column;
    align-items: stretch !important;
    gap: 0.75rem;
  }

  #app .row.mb-3 .col-auto {
    width: 100%;
    max-width: 100%;
  }

  #app .row.mb-3 .col-auto.ms-auto {
    order: -1;
    text-align: center;
  }

  /* Shareable link input: full width on mobile for easier copy/paste */
  .shareable-link-input {
    width: 100% !important;
    max-width: 100%;
    font-size: 0.75rem;
  }

  /* Copy button: full width on small screens for easier tap */
  #copy-link-button-app {
    width: 100%;
    min-height: 44px;
  }

  /* Run and Clear buttons: comfortable tap targets on touch devices */
  #run-button,
  #clear-output-button {
    min-height: 38px;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  /* Editor/output cards: give a minimum height so both panels are usable when stacked */
  .editor-section.card,
  .output-section.card {
    min-height: 220px;
  }

  #editor {
    min-height: 200px;
  }

  .editor-section .card-header,
  .output-section .card-header {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .editor-section .card-header .d-flex.gap-2 {
    width: 100%;
    justify-content: flex-end;
  }

  /* Feedback FAB: smaller and slightly inset so it doesn’t cover content on narrow screens */
  .feedback-fab {
    bottom: 1rem;
    right: 1rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
  }
}

/* ---- Phones and small tablets (up to 768px) ---- */
@media (max-width: 768px) {
  .landing {
    padding: 2.5rem 1rem 4rem;
  }

  .landing-section {
    max-width: 100%;
  }

  /* App: reduce horizontal padding so editor/output use full width */
  #app.container-fluid {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  /* Ensure stacked editor/output rows have enough height */
  #app .row.g-3 {
    min-height: 0;
  }

  .output-card-body {
    min-height: 160px;
  }
}

/* ---- Tablets and up: minor tweaks for medium screens ---- */
@media (min-width: 577px) and (max-width: 768px) {
  .landing-process {
    flex-wrap: wrap;
    justify-content: center;
  }

  .shareable-link-input {
    min-width: 180px;
  }
}