/* ============================================
   CARBON APP STYLES
   
   This file controls the styling for all
   Carbon App pages:
   - carbon_app.html    → Calculator main page (transport cards)
   - new_entry_*.html   → Entry forms (bus, car, plane, etc.)
   - your_data.html     → Dashboard (charts + table)
   
   Pages that also use styles from this file:
   - login.html / register.html use classes
     from home.css (.login-page, .login-container)
   
   Color palette:
   - #e8e6df  Light beige (page backgrounds)
   - #cdc3b7  Medium beige (cards, form boxes)
   - #14532d  Dark green (text, accents)
   - #2d6a4f  Medium green (buttons)
   - #1b4332  Darkest green (button hover)
   - #c0b5a5  Dark beige (card hover)
   - #d97706  Amber (warning nudge border)
   - #7c3e00  Dark amber (warning nudge text)
   ============================================ */

/* ============================================
   1. GLOBAL UTILITIES
   Overrides for paragraphs and headings
   on Carbon App pages.
   ============================================ */

p {
  margin: 10px 0;
  font-size: 18px;
  text-align: left;
}

h4 {
  font-size: 18px;
  text-align: left;
  font-weight: bold;
}

/* Green text class (used in dashboard title) */
.text-logo {
  color: #14532d;
  font-weight: 700;
  letter-spacing: 1px;
  font-family: "Arial";
}

/* ============================================
   2. CALCULATOR MAIN PAGE (carbon_app.html)
   The page where users pick a transport mode.
   Has: title, 3-step instructions, two buttons
   (Methodology + Dashboard), and 8 transport cards.
   ============================================ */

/* --- 2a. Header section (title + instructions + buttons) --- */

/* Beige background section */
.section_header_carbon_app {
  background-color: #e8e6df;
  padding: 40px 0;
}

/* Flex container centering the content box */
.header_carbon_app {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

/* Content box (holds title, steps, buttons) */
.header_carbon_app .box {
  flex: 1;
  max-width: 900px;
  background: transparent;
  color: #14532d;
  border-radius: 10px;
  margin: 20px 10px;
  padding: 15px 20px;
  text-align: center;
}

/* "How to use GreenRoute in 3 steps:" subtitle */
.carbon_app_subtitle {
  color: #14532d;
  font-size: 22px;
  font-weight: 700;
  font-family: "Arial", sans-serif;
  text-align: center;
  margin-bottom: 12px;
}

/* Beige box containing the numbered steps */
.carbon_app_instructions {
  background: #cdc3b7;
  color: #14532d;
  font-weight: 700;
  border-radius: 12px;
  padding: 20px 22px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* The ordered list inside the instructions box */
.carbon_app_steps {
  text-align: left;
  max-width: 500px;
  margin: 0 auto 20px;
  padding-left: 24px;
  font-size: 17px;
  line-height: 1.8;
  color: #14532d;
}

.carbon_app_steps li {
  margin-bottom: 6px;
}

/* Container for Methodology + Dashboard buttons */
.container_buttons_links_header_carbon_app {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

/* --- 2b. Transport cards grid --- */
/* 8 clickable cards (Bicycle, Walk, Bus, Car, 
   Plane, Train, Ferry, Motorbike).
   Each card is an <a> tag linking to the 
   corresponding new_entry_*.html form. */

/* Section background */
.section_carbon_app_new_entry_main {
  background-color: #e8e6df;
  padding-bottom: 40px;
}

/* Flex container wrapping all 8 cards */
.carbon_app_new_entry_main {
  display: flex;
  align-items: stretch;
  background: transparent;
  flex-wrap: wrap;
  gap: 16px;
}

/* Each clickable transport card
   flex: 0 calc(25% - 12px) = exactly 4 per row */
.carbon_app_new_entry_main .box {
  flex: 0 calc(25% - 12px);
  background: #cdc3b7;
  color: #14532d;
  border-radius: 12px;
  padding: 28px 20px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  min-height: 240px;
}

/* Card hover: lift + darken + shadow */
.carbon_app_new_entry_main .box:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 18px rgba(20, 83, 45, 0.25);
  background-color: #c0b5a5;
  text-decoration: none;
  color: #14532d;
}

/* Transport name inside card (e.g. "Bus") */
.carbon_app_new_entry_main .box h3 {
  margin: 8px 0;
  color: #14532d;
}

/* Description text inside card */
.carbon_app_new_entry_main .box p {
  text-align: center;
  margin-bottom: 0;
  color: #14532d;
}

/* ============================================
   3. ENTRY FORMS (new_entry_*.html)
   Individual form pages for each transport mode.
   Each page has: nudge banner, form fields,
   and Back + Submit buttons.
   ============================================ */

/* --- 3a. Full-page centered layout --- */
/* The form sits inside a 3-column layout:
   empty | form card | empty
   This centers the form on the page. */

.new_entry {
  display: flex;
  background: #e8e6df;
  min-height: calc(100vh - 80px);
  align-items: center;
  padding: 40px 0;
}

/* --- 3b. Submit button (green) --- */

.btn_carbon_app_new_entry_main {
  display: inline-block;
  padding: 10px 22px;
  margin: 10px;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  background-color: #2d6a4f;
  border: 2px solid #2d6a4f;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn_carbon_app_new_entry_main:hover {
  color: #fff;
  background-color: #14532d;
  border-color: #14532d;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(20, 83, 45, 0.25);
}

/* --- 3c. Back button (sits next to Submit) --- */

.btn_carbon_app_back {
  display: inline-block;
  padding: 10px 22px;
  margin: 10px;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  background-color: #2d6a4f;
  border: 2px solid #2d6a4f;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn_carbon_app_back:hover {
  color: white;
  background-color: #14532d;
  border-color: #14532d;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(20, 83, 45, 0.25);
}

/* --- 3d. Nudge banners (behavioral design) ---
   Shown above the form to prompt reflection
   before the user logs a trip.
   Two variants:
   - positive (green border): eco-friendly modes
   - warning (amber border): high-emission modes */

.nudge_banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  margin: 16px 0;
  border-radius: 10px;
  text-align: left;
  border-left: 4px solid;
}

/* Green variant (bus, train, bicycle, walk) */
.nudge_banner_positive {
  background: rgba(255, 255, 255, 0.5);
  border-left-color: #14532d;
  color: #1b4332;
}

/* Amber variant (car, plane, ferry, motorbike) */
.nudge_banner_warning {
  background: rgba(255, 255, 255, 0.5);
  border-left-color: #d97706;
  color: #7c3e00;
}

/* Emoji icon inside the nudge banner */
.nudge_icon {
  font-size: 24px;
  flex-shrink: 0;
  line-height: 1;
}

/* Nudge banner title ("Before you log this trip...") */
.nudge_content h4 {
  margin: 0 0 4px 0;
  font-size: 15px;
  font-weight: 700;
  color: inherit;
  text-align: left;
}

/* Nudge banner comparison text */
.nudge_content p {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
  color: inherit;
}

/* Bold text inside nudge (e.g. "10x more CO2") */
.nudge_content strong {
  color: inherit;
  font-weight: 700;
}

/* ============================================
   4. DASHBOARD (your_data.html)
   Shows: title, "New Entry" button, 4 charts
   (2 pie + 2 line), and a data table.
   ============================================ */

/* --- 4a. Dashboard header (title + subtitle + button) --- */

/* Section background */
.section_dashboard_nav {
  background: #e8e6df;
  padding: 30px 0;
}

/* Stacks title, subtitle, and button vertically */
.dashboard_nav_container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

/* "Your Carbon Dashboard" title */
.dashboard_title {
  color: #14532d;
  font-size: 62px;
  font-weight: 800;
  letter-spacing: -1px;
  margin: 0 0 18px 0;
  text-align: center;
}

/* "Showing data from the last 5 days" subtitle */
.dashboard_subtitle {
  color: #555;
  font-size: 18px;
  margin: 0 0 12px 0;
  text-align: center;
}

/* --- 4b. Big "New Entry" button --- */

.big_entry_btn {
  display: block;
  width: 100%;
  max-width: 600px;
  padding: 24px 40px;
  background-color: #2d6a4f;
  color: white;
  text-align: center;
  text-decoration: none;
  font-size: 22px;
  font-weight: 700;
  border-radius: 14px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(20, 83, 45, 0.2);
}

.big_entry_btn:hover {
  background-color: #1b4332;
  color: white;
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(20, 83, 45, 0.3);
}

/* --- 4c. Charts (two side-by-side per row) --- */

.two_emissions_graphs {
  display: flex;
  background: #e8e6df;
}

.two_emissions_graphs .container {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
}

/* Each chart box (beige card with shadow) */
.two_emissions_graphs .container .box {
  flex: 1;
  background: #cdc3b7;
  border-radius: 12px;
  margin: 20px 0;
  padding: 20px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* --- 4d. Table heading --- */

.table_title {
  text-align: center;
  color: #14532d;
  margin-bottom: 16px;
  font-size: 24px;
  font-weight: 700;
}

/* ============================================
   5. SHARED 3-COLUMN LAYOUT
   Pattern: empty | content | empty
   Centers a content card on screen.
   Used by: .new_entry (forms), .table_main 
   (data table), .main_menu (dashboard header)
   ============================================ */

/* All three sections share the same background */
.new_entry,
.table_main,
.main_menu {
  display: flex;
  background: #e8e6df;
}

/* 3-column flex container */
.new_entry .container,
.table_main .container,
.main_menu .container {
  display: flex;
  align-items: start;
  justify-content: space-between;
  background: transparent;
}

/* Columns 1 and 3: invisible spacers */
.new_entry .container .box,
.table_main .container .box,
.main_menu .container .box {
  flex: 1;
  background: transparent;
  padding: 0;
  text-align: left;
}

/* Column 2: the visible beige content card */
.new_entry .container .box:nth-of-type(2),
.table_main .container .box:nth-of-type(2),
.main_menu .container .box:nth-of-type(2) {
  flex-grow: 6;
  max-width: 450px;
  background: #cdc3b7;
  color: #14532d;
  border-radius: 12px;
  margin: 20px 10px;
  padding: 20px 22px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Table needs full width (no max-width cap) */
.table_main .container .box:nth-of-type(2) {
  max-width: none;
}

/* ============================================
   6. MISC COMPONENTS
   Small reusable pieces used across
   multiple Carbon App pages.
   ============================================ */

/* Button container on old-style card layouts */
.section_container_buttons_carbon_app_new_entry_main {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 10px;
}

/* Button container on dashboard main menu */
.container_buttons_links_main_menu {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============================================
   7. RESPONSIVE
   Adjustments for tablets and phones.
   ============================================ */

@media (max-width: 768px) {
  /* Stack header and cards vertically */
  .header_carbon_app,
  .carbon_app_new_entry_main {
    flex-direction: column;
  }

  /* Stack all 3-column layouts vertically */
  .new_entry .container,
  .table_main .container,
  .main_menu .container,
  .two_emissions_graphs .container {
    flex-direction: column;
    padding: 10px;
    text-align: center;
  }
}