/* ============================================
   RESET
   ============================================ */

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg-main);
  color: var(--color-text-body);
  line-height: 1.6;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}


/* ============================================
   TYPOGRAPHY
   ============================================ */

/* Base text */
html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-body);
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 0;
}

/* Heading scale (desktop-first) */
h1 {
  font-size: 2.25rem;   /* 36px */
  margin-bottom: var(--space-5);
}

h2 {
  font-size: 1.75rem;   /* 28px */
  margin-bottom: var(--space-4);
}

h3 {
  font-size: 1.375rem;  /* 22px */
  margin-bottom: var(--space-3);
}

h4 {
  font-size: 1.125rem;  /* 18px */
  margin-bottom: var(--space-2);
}

h5 {
  font-size: 1rem;
  margin-bottom: var(--space-2);
}

h6 {
  font-size: 0.875rem;
  margin-bottom: var(--space-2);
}

/* Paragraphs */
p {
  margin-top: 0;
  margin-bottom: var(--space-4);
}

/* Lists (important for report sections) */
ul, ol {
  margin-top: 0;
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
}

/* Small / meta text */
small,
.text-small {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Links inside content */
p a,
li a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Horizontal rule */
hr {
  border: none;
  border-top: var(--border-width) solid var(--color-border);
  margin: var(--space-6) 0;
}

/* ============================================
   VARIABLES
   ============================================ */

:root {
  /* Colors */
  --color-bg-main: #ffffff;
  --color-bg-soft: #f7f8fa;

  --color-text-primary: #111827;
  --color-text-body: #374151;
  --color-text-muted: #6b7280;

  --color-border: #e5e7eb;
  --color-accent: #1d4ed8;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Borders & radius */
  --border-width: 1px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 10px rgba(0,0,0,0.06);
}

/* ============================================
   COMPONENTS - BUTTONS
   ============================================ */

/* Base button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: var(--space-3) var(--space-5);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;

  border-radius: var(--radius-sm);
  border: var(--border-width) solid transparent;
  cursor: pointer;
  text-decoration: none;

  transition: background-color 0.15s ease,
              color 0.15s ease,
              border-color 0.15s ease;
}

/* Primary action (calm, professional) */
.btn-primary {
  background-color: #1f3a8a; /* calmer, deeper blue */
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #1e3a72; /* subtle darkening */
}


/* Secondary / neutral */
.btn-secondary {
  background-color: #ffffff;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-bg-soft);
}

/* Small button */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.85rem;
}

.btn-outline {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  color: white;
  transition: all 0.3s ease; /* Smooth transition for hover */
  position: relative; /* For overlay pseudo-element */
}

.btn-outline:hover {
  background: linear-gradient(135deg, #5a6fd0 0%, #6a4190 100%); /* Slightly darker colors */
}

.btn-outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.1); /* Subtle dark overlay */
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  border-radius: inherit; /* Matches button border-radius if any */
}

.btn-outline:hover::before {
  opacity: 1;
}


/* Disabled state */
.btn[disabled],
.btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Focus (keyboard accessibility) */
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   COMPONENTS - CARDs
   ============================================ */

/* Base card */
.card {
  background-color: #ffffff;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

/* Card title */
.card-title {
  margin-bottom: var(--space-2);
}

/* Card meta (date, category, etc.) */
.card-meta {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

/* Card content */
.card-content {
  margin-bottom: var(--space-4);
}

/* Card actions */
.card-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}



/* ============================================
   COMPONENTS - FORMS
   ============================================ */

/* Form layout helpers */
.form {
  display: grid;
  gap: var(--space-4);
}

.field {
  display: grid;
  gap: var(--space-2);
}

.label {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.95rem;
}

.help {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Inputs */
.input,
.select,
.textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;        /* match paragraph */
  line-height: 1.65;
  color: var(--color-text-body);

  padding: var(--space-3) var(--space-4);
  background: #ffffff;

  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);

  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

/* Focus state */
.input:focus,
.select:focus,
.textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.12);
}

/* Placeholder */
.input::placeholder,
.textarea::placeholder {
  color: #9ca3af;
}

/* Disabled */
.input:disabled,
.select:disabled,
.textarea:disabled {
  background: var(--color-bg-soft);
  cursor: not-allowed;
}

/* Error state (class-based; JS/server can add later) */
.field.error .label {
  color: #991b1b;
}

.field.error .input,
.field.error .select,
.field.error .textarea {
  border-color: #dc2626;
}

.field.error .help {
  color: #b91c1c;
}

/* Inline row (for name + email etc.) */
.form-row {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   COMPONENTS - TABLES
   ============================================ */

/* Table wrapper for mobile */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
}

/* Base table */
.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px; /* allows horizontal scroll on small screens */
  font-size: 1rem; /* match paragraph font size */
  line-height: 1.65;
}

/* Cells */
.table th,
.table td {
  padding: var(--space-2) var(--space-4); /* reduced vertical spacing */
  border-bottom: var(--border-width) solid var(--color-border);
  border-right: var(--border-width) solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

/* Remove last column border */
.table th:last-child,
.table td:last-child {
  border-right: none;
}

/* Header */
.table thead th {
  background: var(--color-bg-soft);
  color: var(--color-text-primary);
  font-weight: 600;
  border-bottom: var(--border-width) solid var(--color-border);
}

/* Row hover (subtle) */
.table tbody tr:hover {
  background: #fafafa;
}

/* Last row border cleanup */
.table tbody tr:last-child td {
  border-bottom: none;
}

/* Numeric alignment helper */
.table .num {
  text-align: right;
  white-space: nowrap;
}

/* Muted helper */
.table .muted {
  color: var(--color-text-muted);
}

/* ============================================
   LAYOUT - GRIDS
   ============================================ */

/* Main page container */
.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

/* Narrow container (for long reading) */
.container-sm {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

/* Section spacing */
.section {
  padding-top: var(--space-7);
  padding-bottom: var(--space-7);
}

/* Section background helper */
.section-soft {
  background-color: var(--color-bg-soft);
}

/* Stack utility (vertical spacing) */
.stack > * + * {
  margin-top: var(--space-4);
}