/**
 * ============================================================
 * OKTO SOFTWARE — DESIGN SYSTEM v1.1
 * ============================================================
 * Built for:   OKTO Brokerage Operating System
 * Stack:       PHP 8 / MySQL / Bluehost
 * Font:        Plus Jakarta Sans via Google Fonts (400/500/600/700)
 * Source:      Figma by Alecs — Marcela HQ Project
 * Icons:       Lucide Icons (placeholder — swappable)
 * Path:        /assets/css/okto-design-system.css
 * ============================================================
 */

/* ============================================================
   1. GOOGLE FONTS — Plus Jakarta Sans
   Weights loaded: 400 (Regular) · 500 (Medium) ·
                   600 (SemiBold) · 700 (Bold)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

/* ============================================================
   2. CSS CUSTOM PROPERTIES — DESIGN TOKENS
   ============================================================ */

:root {

  /* ----------------------------------------------------------
     FONT STACK
     ---------------------------------------------------------- */
  --font-primary: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* ----------------------------------------------------------
     THEME — 60 / 30 / 10 RULE
     ---------------------------------------------------------- */
  --color-main:      #E8F5E9;
  --color-secondary: #3D4D47;
  --color-accent:    #8DB600;

  /* ----------------------------------------------------------
     PRIMARY GREENS
     ---------------------------------------------------------- */
  --primary-100: #1B4D1E;
  --primary-200: #236B27;
  --primary-300: #2E8B32;
  --primary-400: #4CAF50;
  --primary-500: #76C442;
  --primary-600: #A8D96A;
  --primary-700: #C5E89A;
  --primary-800: #DCEFC1;
  --primary-900: #F0F9E4;

  /* ----------------------------------------------------------
     SECONDARY — Teal / Slate Greens
     ---------------------------------------------------------- */
  --grey-900: #1C2B27;
  --grey-800: #263D38;
  --grey-700: #2F4E48;
  --grey-600: #3A6059;
  --grey-500: #4A7A72;
  --grey-400: #6A9E96;
  --grey-300: #9EC4BF;
  --grey-200: #C2DEDA;
  --grey-100: #E0EFED;
  --grey-50:  #EEF6F5;

  /* ----------------------------------------------------------
     NEUTRAL GRAYS
     ---------------------------------------------------------- */
  --neutral-900: #1A1A1A;
  --neutral-800: #2E2E2E;
  --neutral-700: #444444;
  --neutral-600: #555555;
  --neutral-500: #757575;
  --neutral-400: #9E9E9E;
  --neutral-300: #BDBDBD;
  --neutral-200: #D6D6D6;
  --neutral-100: #EEEEEE;
  --neutral-50:  #F7F7F7;

  /* ----------------------------------------------------------
     ERROR
     ---------------------------------------------------------- */
  --error-900: #4A0000;
  --error-800: #7B1010;
  --error-500: #C62828;
  --error-400: #EF5350;
  --error-300: #EF9A9A;
  --error-100: #FFEBEE;

  /* ----------------------------------------------------------
     SUCCESS
     ---------------------------------------------------------- */
  --success-700: #2E7D32;
  --success-500: #388E3C;
  --success-400: #43A047;
  --success-300: #81C784;
  --success-100: #E8F5E9;

  /* ----------------------------------------------------------
     LOGIN TOKENS — locked spec
     ---------------------------------------------------------- */
  --login-panel-bg:      #F5F5F5;
  --login-logo-bg:       #3D4A52;
  --login-heading-color: #1A1A1A;
  --login-label-color:   #333333;
  --login-placeholder:   #9EA8B3;
  --login-input-border:  #C5D3E0;
  --login-input-focus:   #8DB600;
  --login-input-bg:      #FFFFFF;
  --login-input-error:   #C62828;
  --login-forgot-color:  #555555;
  --login-divider-line:  #CCCCCC;
  --login-divider-dot:   #AAAAAA;
  --login-google-border: #DDDDDD;
  --login-btn-disabled:  #BDBDBD;

  /* ----------------------------------------------------------
     SEMANTIC ALIASES
     ---------------------------------------------------------- */
  --color-bg-page:          var(--color-main);
  --color-bg-sidebar:       var(--color-secondary);
  --color-bg-card:          #FFFFFF;
  --color-bg-card-dark:     var(--grey-900);
  --color-text-primary:     var(--neutral-900);
  --color-text-secondary:   var(--neutral-600);
  --color-text-placeholder: var(--neutral-500);
  --color-text-disabled:    var(--neutral-400);
  --color-text-inverse:     #FFFFFF;
  --color-border:           var(--neutral-300);
  --color-border-focus:     var(--color-accent);
  --color-border-error:     var(--error-400);

  /* ----------------------------------------------------------
     SPACING — 4px base grid
     ---------------------------------------------------------- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  10px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-7:  28px;
  --space-8:  32px;
  --space-9:  36px;
  --space-10: 40px;
  --space-11: 44px;
  --space-12: 48px;
  --space-14: 52px;
  --space-16: 64px;

  /* ----------------------------------------------------------
     BORDER RADIUS
     ---------------------------------------------------------- */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-pill: 999px;

  /* ----------------------------------------------------------
     SHADOWS
     ---------------------------------------------------------- */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

  /* ----------------------------------------------------------
     TRANSITIONS
     ---------------------------------------------------------- */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;

  /* ----------------------------------------------------------
     Z-INDEX
     ---------------------------------------------------------- */
  --z-base:     0;
  --z-raised:   10;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-modal:    300;
  --z-toast:    400;
}

/* ============================================================
   3. RESET & BASE
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

img, video { max-width: 100%; display: block; }
ul, ol     { list-style: none; }
button     { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { text-decoration: underline; }

/* ============================================================
   4. TYPOGRAPHY
   ============================================================ */

h1 { font-size: 36px; font-weight: 700; line-height: 1.2;  color: var(--neutral-900); }
h2 { font-size: 30px; font-weight: 700; line-height: 1.25; color: var(--neutral-900); }
h3 { font-size: 22px; font-weight: 700; line-height: 1.3;  color: var(--neutral-900); }
h4 { font-size: 18px; font-weight: 600; line-height: 1.4;  color: var(--neutral-900); }
h5 { font-size: 15px; font-weight: 600; line-height: 1.5;  color: var(--neutral-900); }
p  { font-size: 15px; font-weight: 400; line-height: 1.6;  color: var(--neutral-700); }

/* ============================================================
   5. BUTTON BASE
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 15px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  padding: 0 var(--space-6);
  height: 48px;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { cursor: not-allowed; opacity: 0.5; transform: none; }

.btn-primary { background-color: var(--color-accent); color: #FFFFFF; border-color: var(--color-accent); }
.btn-primary:hover:not(:disabled) { background-color: #7A9E00; border-color: #7A9E00; box-shadow: 0 4px 14px rgba(141,182,0,0.35); color: #FFFFFF; text-decoration: none; }

.btn-outline { background: transparent; color: var(--color-accent); border-color: var(--color-accent); }
.btn-outline:hover:not(:disabled) { background-color: var(--color-accent); color: #FFFFFF; text-decoration: none; }

.btn-full { width: 100%; }

/* ============================================================
   6. FORM BASE
   ============================================================ */

.form-group { display: flex; flex-direction: column; gap: var(--space-2); }

.form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--login-label-color);
  line-height: 1;
}

.form-input {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-4);
  font-family: var(--font-primary);
  font-size: 14px;
  color: var(--neutral-900);
  background-color: var(--login-input-bg);
  border: 1.5px solid var(--login-input-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input::placeholder { color: var(--login-placeholder); }
.form-input:focus { border-color: var(--login-input-focus); box-shadow: 0 0 0 3px rgba(141,182,0,0.15); }
.form-input.is-error { border-color: var(--login-input-error); box-shadow: 0 0 0 3px rgba(198,40,40,0.10); }

.form-error-msg { font-size: 12px; color: var(--login-input-error); display: none; align-items: center; gap: 4px; margin-top: 2px; }
.form-error-msg.visible { display: flex; }

/* ============================================================
   7. BADGE / CARD / AVATAR
   ============================================================ */

.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: var(--radius-pill); font-size: 12px; font-weight: 600; }
.badge-success { background: var(--success-100); color: var(--success-700); }
.badge-error   { background: var(--error-100);   color: var(--error-500); }
.badge-accent  { background: var(--color-accent); color: #FFFFFF; }

.card { background: var(--color-bg-card); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: var(--space-6); border: 1px solid var(--neutral-100); }

.avatar { width: 40px; height: 40px; border-radius: 50%; background-color: var(--grey-700); color: #FFFFFF; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; flex-shrink: 0; overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ============================================================
   8. ALERT
   ============================================================ */

.alert { display: flex; align-items: flex-start; gap: var(--space-2); padding: var(--space-4); border-radius: var(--radius-md); font-size: 14px; border-left: 4px solid transparent; }
.alert-error   { background: var(--error-100);   border-color: var(--error-500);   color: var(--error-500); }
.alert-success { background: var(--success-100); border-color: var(--success-500); color: var(--success-700); }

/* ============================================================
   9. UTILITIES
   ============================================================ */

.flex            { display: flex; }
.flex-col        { flex-direction: column; }
.items-center    { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.w-full          { width: 100%; }
.text-center     { text-align: center; }
.hidden          { display: none !important; }

/* ============================================================
   10. RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
  h1 { font-size: 28px; }
  h2 { font-size: 24px; }
}