/* =====================================================
   Cornbelt AI — styles.css
   White minimalist palette with earthy green accent
   Agriculture × Technology aesthetic
   ===================================================== */

/* ---- Custom Properties ---- */
:root {
  /* Core palette — clean minimalist + agricultural green */
  --color-green:         #2E7D32;  /* primary rich field green */
  --color-green-mid:     #4CAF50;  /* accent green */
  --color-green-light:   #66BB6A;  /* lighter green */
  --color-green-pale:    #E8F5E9;  /* very pale green tint */
  --color-green-border:  #C8E6C9;  /* soft green border */

  /* Neutrals */
  --color-white:         #ffffff;
  --color-bg:            #F8F9FA;  /* soft off-white section background */
  --color-surface:       #ffffff;  /* card / tile surface */
  --color-border:        #E9ECEF;  /* subtle border */
  --color-text:          #1a1a1a;  /* near-black */
  --color-text-muted:    #6B7280;  /* muted secondary text */
  --color-text-light:    #9CA3AF;  /* light muted */

  /* Legacy aliases (for backward compat in chat/form CSS) */
  --color-soil:          #1a1a1a;
  --color-bark:          #F8F9FA;
  --color-field:         #2E7D32;
  --color-leaf:          #4CAF50;
  --color-sprout:        #66BB6A;
  --color-tan:           #6B7280;
  --color-straw:         #E8F5E9;
  --color-soy-gold:      #b07d2a;
  --color-error:         #dc2626;

  /* Typography */
  --font-heading: 'Inter', 'SF Pro Display', 'Helvetica Neue', system-ui, sans-serif;
  --font-body:    'Inter', 'SF Pro Text', 'Helvetica Neue', system-ui, sans-serif;

  /* Spacing & shape */
  --radius:        18px;
  --radius-sm:     10px;
  --radius-pill:   50px;
  --shadow-sm:     0 1px 4px rgba(0, 0, 0, 0.05);
  --shadow:        0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-md:     0 8px 24px rgba(0, 0, 0, 0.08);
  --max-width:     1200px;
  --section-pad:   5rem 1.5rem;
  /* Chat-specific heights */
  --chat-topbar-h:   50px;
  --chat-controls-h: 46px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
}

img { max-width: 100%; display: block; }

a {
  color: var(--color-green);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--color-green-mid); }

/* Screen-reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Layout ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Buttons ---- */
.btn-primary {
  display: inline-block;
  background-color: var(--color-green);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.btn-primary:hover {
  background-color: var(--color-green-mid);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(46, 125, 50, 0.30);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* ====================================================
   HEADER
==================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 0 var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-green);
  letter-spacing: 0.01em;
}


.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.beta-badge {
  display: inline-block;
  background: var(--color-green-pale);
  color: var(--color-green);
  border: 1px solid var(--color-green-border);
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.1rem 0.45rem;
  text-transform: uppercase;
}


.site-header nav {
  display: flex;
  gap: 1.75rem;
}

.site-header nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.site-header nav a:hover {
  color: var(--color-green);
}

/* ====================================================
   HERO
==================================================== */
.hero {
  background: linear-gradient(180deg, #ffffff 60%, #F1F8F1 100%);
  padding: 6rem 1.5rem 5rem;
  text-align: center;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

/* Subtle radial highlight — technical meets field */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(76, 175, 80, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-label {
  display: inline-block;
  background-color: var(--color-green-pale);
  color: var(--color-green);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  margin-bottom: 1.25rem;
  border: 1px solid var(--color-green-border);
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  font-weight: 400;
}

.hero-description {
  max-width: 620px;
  margin: 0 auto 2.25rem;
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}


.hero-actions {
  display: inline-flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}


/* ====================================================
   SHARED SECTION STYLES
==================================================== */
h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.section-intro {
  max-width: 600px;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
}

/* ====================================================
   WHAT IT DOES (light background)
==================================================== */
.section-light {
  padding: var(--section-pad);
  background-color: var(--color-bg);
}

.section-light h2 { color: var(--color-text); }

/* Feature list — tiles with rounded corners and drop shadow */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  box-shadow: var(--shadow);
  transition: all 0.2s ease;
}

.feature-list li:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.feature-list strong {
  display: block;
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 0.2rem;
  font-weight: 600;
}

.feature-list p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* ====================================================
   WHY IT'S DIFFERENT — light tiles, green accent
==================================================== */
.section-dark {
  padding: var(--section-pad);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.section-dark h2 { color: var(--color-text); }
.section-dark .section-intro { color: var(--color-text-muted); }

/* Card grid — tiles with rounded corners and drop shadow */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  /* Uniform border — card titles use --color-green for visual differentiation */
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-green);
  margin-bottom: 0.6rem;
  letter-spacing: -0.005em;
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ====================================================
   EMAIL SIGNUP
==================================================== */
.section-signup {
  padding: var(--section-pad);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-green-pale) 100%);
  text-align: center;
  color: var(--color-text);
  border-top: 1px solid var(--color-border);
}

.signup-inner h2 {
  color: var(--color-text);
  margin-bottom: 0.6rem;
}

.signup-inner > p {
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto 2rem;
  font-size: 1.05rem;
}

.signup-form {
  max-width: 460px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.form-group input[type="email"] {
  flex: 1 1 220px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: var(--font-body);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  background-color: var(--color-white);
  color: var(--color-text);
  outline: none;
  transition: all 0.2s ease;
}

.form-group input[type="email"]:focus {
  border-color: var(--color-green);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.12);
}

.form-group input[type="email"].input-error {
  border-color: var(--color-error);
}

.form-message {
  min-height: 1.4em;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.form-message.success { color: var(--color-green); }
.form-message.error   { color: var(--color-error); }

/* ====================================================
   FOOTER
==================================================== */
.site-footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  text-align: center;
  padding: 2.5rem 1.5rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: center;
}

.footer-dedication {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-text-muted);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.footer-links a:hover {
  color: var(--color-green);
  border-color: var(--color-green);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

/* ====================================================
   CROP TOGGLE
==================================================== */
.crop-toggle {
  display: inline-flex;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 40px;
  padding: 4px;
  gap: 4px;
  margin-bottom: 1.5rem;
}

.crop-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: none;
  border-radius: 36px;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.45rem 1.1rem;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
  white-space: nowrap;
}

.crop-btn:hover {
  color: var(--color-green);
}

.crop-btn.active {
  background-color: var(--color-green);
  color: var(--color-white);
}

.crop-btn[data-crop="soy"].active {
  background-color: var(--color-soy-gold);
}

/* ====================================================
   CHAT PAGE — TOP BAR (narrow, clean, chat-only)
==================================================== */
.site-header--chat .header-inner--chat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 1.25rem;
}

/* Account dropdown */
.account-dropdown-wrap {
  position: relative;
}

.account-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.account-btn:hover {
  background: var(--color-green-pale);
  border-color: var(--color-green-border);
  color: var(--color-green);
}

.account-btn-icon { font-size: 1rem; }
.account-btn-caret { font-size: 0.7rem; color: var(--color-text-light); }

.account-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  min-width: 180px;
  z-index: 300;
  overflow: hidden;
}

.account-dropdown-info {
  padding: 0.6rem 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  word-break: break-all;
}

.account-dropdown-item {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}

.account-dropdown-item:hover {
  background: var(--color-bg);
  color: var(--color-green);
}

.account-dropdown-logout {
  color: var(--color-error);
}

.account-dropdown-logout:hover {
  background: #fef2f2;
  color: var(--color-error);
}

/* ====================================================
   CHAT HEADER CONTROL ROW
   (under top bar, above the chat layout)
==================================================== */
.chat-header-controls {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.55rem 1.25rem;
  position: sticky;
  top: var(--chat-topbar-h); /* sit just below the top bar */
  z-index: 90;
}

.chat-header-controls-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* 3-state crop toggle in header */
.header-crop-toggle {
  display: inline-flex;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 3px;
  gap: 3px;
}

.header-crop-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: transparent;
  border: none;
  border-radius: 30px;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 0.9rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}

.header-crop-btn:hover {
  color: var(--color-green);
}

.header-crop-btn.active {
  background: var(--color-green);
  color: var(--color-white);
}

.header-crop-btn[data-crop="soy"].active {
  background: var(--color-soy-gold);
}

.header-crop-btn:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 2px;
}

/* Freeform "Other" crop input */
.other-crop-wrap {
  display: flex;
  align-items: center;
}

.other-crop-input {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  font-family: var(--font-body);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  width: 160px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.other-crop-input:focus {
  border-color: var(--color-green);
  box-shadow: 0 0 0 3px rgba(46,125,50,0.10);
}

/* Active field badge */
.active-field-badge {
  display: inline-flex;
  align-items: center;
  background: var(--color-green-pale);
  border: 1px solid var(--color-green-border);
  border-radius: var(--radius-pill);
  color: var(--color-green);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  white-space: nowrap;
}

/* Add Field Data button */
.add-field-data-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--color-surface);
  border: 1.5px solid var(--color-green-border);
  border-radius: var(--radius-sm);
  color: var(--color-green);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.add-field-data-btn:hover {
  background: var(--color-green-pale);
  border-color: var(--color-green);
  box-shadow: var(--shadow);
}

.add-field-data-btn:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 2px;
}

.field-data-set-dot {
  width: 7px;
  height: 7px;
  background: var(--color-green);
  border-radius: 50%;
  display: inline-block;
}

/* ====================================================
   CHAT LAYOUT — updated height accounting for header bar
==================================================== */
.chat-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: calc(100vh - var(--chat-topbar-h) - var(--chat-controls-h));
  overflow: hidden;
}

/* ====================================================
   SIDEBAR — refactored sections
==================================================== */
.chat-sidebar {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-section {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-section--grow {
  flex: 1;
  border-bottom: none;
}

.sidebar-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
}

.sidebar-action-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-green);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.65rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.sidebar-action-btn:hover {
  background: var(--color-green-pale);
  border-color: var(--color-green-border);
}

.sidebar-profile-summary {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  word-break: break-word;
}

/* Sidebar lists (fields + conversations) */
.sidebar-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
}

.sidebar-list-empty {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-style: italic;
  padding: 0.25rem 0;
}

.sidebar-list-item {
  display: flex;
  align-items: stretch;
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: background 0.15s;
}

.sidebar-list-item:hover {
  background: var(--color-bg);
}

.sidebar-list-item.active {
  background: var(--color-green-pale);
}

/* Field item */
.sidebar-field-btn {
  flex: 1;
  background: none;
  border: none;
  text-align: left;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
  font-family: var(--font-body);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.field-item-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.field-item-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.sidebar-item-edit-btn {
  background: none;
  border: none;
  color: var(--color-text-light);
  font-size: 0.85rem;
  padding: 0 0.5rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: color 0.15s;
}

.sidebar-item-edit-btn:hover {
  color: var(--color-green);
}

/* Conversation item */
.sidebar-conv-btn {
  flex: 1;
  background: none;
  border: none;
  text-align: left;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
  font-family: var(--font-body);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  width: 100%;
}

.conv-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}

.conv-preview {
  font-size: 0.75rem;
  color: var(--color-text-light);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}

/* New conversation button (pinned at bottom of sidebar) */
.sidebar-new-conv {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.btn-new-conv {
  display: block;
  width: 100%;
  background: var(--color-green);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.55rem 0.75rem;
  cursor: pointer;
  text-align: center;
  transition: background 0.2s, box-shadow 0.2s;
}

.btn-new-conv:hover {
  background: var(--color-green-mid);
  box-shadow: 0 2px 8px rgba(46,125,50,0.25);
}

.btn-new-conv:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 2px;
}

/* ====================================================
   MODAL — tabs for field add/edit
==================================================== */
.modal-card--wide {
  max-width: 760px;
}

.modal-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1.25rem;
}

.modal-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  padding: 0.55rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.modal-tab:hover {
  color: var(--color-green);
}

.modal-tab.active {
  color: var(--color-green);
  border-bottom-color: var(--color-green);
}

.modal-tab:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 2px;
}

.required-star {
  color: var(--color-error);
}

/* ====================================================
   RESPONSIVE — chat page
==================================================== */
@media (max-width: 640px) {
  .chat-header-controls {
    top: var(--chat-topbar-h);
    padding: 0.45rem 0.75rem;
  }
  .chat-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    height: auto;
    min-height: calc(100vh - 100px);
  }
  .chat-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    max-height: 40vh;
  }
  .header-crop-btn {
    font-size: 0.78rem;
    padding: 0.3rem 0.65rem;
  }
  .add-field-data-btn {
    font-size: 0.78rem;
    padding: 0.3rem 0.65rem;
  }
}

.chat-main {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  overflow: hidden;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message {
  display: flex;
  gap: 0.75rem;
  max-width: 75%;
  animation: fadeSlideIn 0.2s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.message.user .message-avatar {
  background-color: var(--color-green-pale);
}

.message.assistant .message-avatar {
  background-color: var(--color-green-pale);
}

.message-bubble {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.65;
  box-shadow: var(--shadow-sm);
}

.message.user .message-bubble {
  background-color: var(--color-green);
  border-color: var(--color-green);
  color: var(--color-white);
}

.message-source {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 0.35rem;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.source-chip {
  background-color: var(--color-green-pale);
  border: 1px solid var(--color-green-border);
  border-radius: 20px;
  padding: 0.15rem 0.55rem;
  font-size: 0.7rem;
  color: var(--color-green);
}

.chat-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  text-align: center;
  padding: 2rem;
  color: var(--color-text-muted);
  gap: 0.75rem;
}

.chat-empty-icon {
  font-size: 3rem;
  line-height: 1;
}

.chat-empty-state h2 {
  font-size: 1.3rem;
  color: var(--color-text);
  margin-bottom: 0;
}

.chat-empty-state p {
  font-size: 0.95rem;
  max-width: 380px;
}

.chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.suggestion-chip {
  background-color: var(--color-surface);
  border: 1px solid var(--color-green-border);
  border-radius: 20px;
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  color: var(--color-green);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
  font-family: var(--font-body);
}

.suggestion-chip:hover {
  background-color: var(--color-green-pale);
  border-color: var(--color-green);
}

.chat-input-bar {
  border-top: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  display: flex;
  gap: 0.75rem;
  background-color: var(--color-white);
}

.chat-input {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: none;
}

.chat-input:focus {
  border-color: var(--color-green);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.10);
}

.chat-send-btn {
  background-color: var(--color-green);
  border: none;
  border-radius: var(--radius-pill);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.chat-send-btn:hover {
  background-color: var(--color-green-mid);
}

.chat-send-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.typing-indicator .message-bubble {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 0.9rem 1rem;
}

.typing-dot {
  width: 7px;
  height: 7px;
  background-color: var(--color-text-light);
  border-radius: 50%;
  animation: typingBounce 1.2s infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30%            { transform: translateY(-5px); }
}

/* ====================================================
   FARM PROFILE PAGE
==================================================== */
.profile-page {
  background-color: var(--color-bg);
  min-height: calc(100vh - 60px);
  padding: 3rem 1.5rem;
}

.profile-container {
  max-width: 680px;
  margin: 0 auto;
}

.profile-header {
  margin-bottom: 2.5rem;
}

.profile-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2rem);
  color: var(--color-text);
  margin-bottom: 0.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.profile-header p {
  color: var(--color-text-muted);
  font-size: 1rem;
}

.profile-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Tile cards with rounded corners and drop shadow */
.form-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: var(--shadow);
}

.form-section-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-border);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
}

.field-group:last-child {
  margin-bottom: 0;
}

.field-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.field-group .field-hint {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: -0.2rem;
}

.field-group input[type="text"],
.field-group input[type="number"],
.field-group select,
.field-group textarea {
  padding: 0.65rem 0.9rem;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.field-group input:focus,
.field-group select:focus,
.field-group textarea:focus {
  border-color: var(--color-green);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.10);
}

.field-group textarea {
  min-height: 90px;
  resize: vertical;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.profile-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-secondary {
  display: inline-block;
  background-color: transparent;
  color: var(--color-green);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border: 1.5px solid var(--color-green-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: var(--color-green-pale);
  border-color: var(--color-green);
  color: var(--color-green);
}

.profile-save-msg {
  font-size: 0.9rem;
  font-weight: 500;
  margin-left: 0.25rem;
}

.profile-save-msg.success { color: var(--color-green); }
.profile-save-msg.error   { color: var(--color-error); }

.btn-danger {
  border-color: #fecaca;
  color: var(--color-error);
}

.btn-danger:hover {
  background-color: #fef2f2;
  border-color: var(--color-error);
}

/* ====================================================
   MODAL
==================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 50, 28, 0.35);
  backdrop-filter: blur(2px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 2rem;
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.modal-field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1rem;
}

.modal-field-full {
  grid-column: 1 / -1;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

/* ====================================================
   RESPONSIVE
==================================================== */
@media (max-width: 640px) {
  .site-header nav {
    gap: 1rem;
  }

  .site-header nav a {
    font-size: 0.8rem;
  }

  .hero {
    padding: 4rem 1rem 3.5rem;
  }

  .hero-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .form-group {
    flex-direction: column;
  }

  .form-group input[type="email"],
  .form-group .btn-primary {
    width: 100%;
  }

  .message {
    max-width: 90%;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .modal-field-grid {
    grid-template-columns: 1fr;
  }
}