/**
 * Design Tokens - Life Tracker by Bonn
 * Design System v2.0
 *
 * Generato da ui-designer skill
 * Data: 2026-01-31
 *
 * RATIONALE DELLE SCELTE:
 *
 * PALETTE:
 * - Primary (Teal): Colore associato a calma, salute e fiducia nel settore healthcare.
 *   Ispirato a Headspace, Calm e app wellness moderne. Evita il blu generico.
 * - Secondary (Coral/Warm): Colore energetico ma non aggressivo, perfetto per
 *   motivazione e gamification (badge, streak). Complementare al teal.
 * - Accent (Amber): Per highlight e azioni importanti, evoca energia positiva.
 *
 * TIPOGRAFIA:
 * - Heading: "Plus Jakarta Sans" - Geometric sans moderna, friendly ma professionale.
 *   Più carattere di Inter/Roboto, ottima leggibilità, adatta a target 25-45.
 * - Body: "DM Sans" - Pulito, leggibile, complementare a Plus Jakarta Sans.
 *   Ottimo per dati e numeri (tabular figures disponibili).
 *
 * RIFERIMENTI:
 * - Headspace: approccio friendly, colori soft
 * - Calm: spazi ampi, visual language sereno
 * - Oscar Health: interfaccia medica ma approachable
 * - Modern wellness dashboards: card-based, data visualization chiara
 */

/* Google Fonts Import */
@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap");

:root {
  /* ===========================================
     COLORS - Primary (Teal - Salute & Calma)
     =========================================== */
  --color-primary-50: #f0fdfa;
  --color-primary-100: #ccfbf1;
  --color-primary-200: #99f6e4;
  --color-primary-300: #5eead4;
  --color-primary-400: #2dd4bf;
  --color-primary-500: #14b8a6; /* Colore principale */
  --color-primary-600: #0d9488;
  --color-primary-700: #0f766e;
  --color-primary-800: #115e59;
  --color-primary-900: #134e4a;

  /* ===========================================
     COLORS - Secondary (Coral - Energia & Motivazione)
     =========================================== */
  --color-secondary-50: #fff5f5;
  --color-secondary-100: #ffe4e6;
  --color-secondary-200: #fecdd3;
  --color-secondary-300: #fda4af;
  --color-secondary-400: #fb7185;
  --color-secondary-500: #f43f5e; /* Rose/Coral */
  --color-secondary-600: #e11d48;
  --color-secondary-700: #be123c;
  --color-secondary-800: #9f1239;
  --color-secondary-900: #881337;

  /* ===========================================
     COLORS - Accent (Amber - Highlight & Azione)
     =========================================== */
  --color-accent-50: #fffbeb;
  --color-accent-100: #fef3c7;
  --color-accent-200: #fde68a;
  --color-accent-300: #fcd34d;
  --color-accent-400: #fbbf24;
  --color-accent-500: #f59e0b;
  --color-accent-600: #d97706;
  --color-accent-700: #b45309;
  --color-accent-800: #92400e;
  --color-accent-900: #78350f;

  /* ===========================================
     COLORS - Semantic
     =========================================== */
  --color-success: #10b981;
  --color-success-light: #d1fae5;
  --color-success-dark: #059669;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-warning-dark: #d97706;
  --color-error: #ef4444;
  --color-error-light: #fee2e2;
  --color-error-dark: #dc2626;
  --color-info: #0ea5e9;
  --color-info-light: #e0f2fe;
  --color-info-dark: #0284c7;

  /* ===========================================
     COLORS - Neutrals (Warm Gray - Non freddo)
     =========================================== */
  --color-white: #ffffff;
  --color-black: #0f0f0f;

  --color-gray-50: #fafaf9; /* Background chiaro */
  --color-gray-100: #f5f5f4;
  --color-gray-200: #e7e5e4; /* Bordi, dividers */
  --color-gray-300: #d6d3d1;
  --color-gray-400: #a8a29e; /* Placeholder text */
  --color-gray-500: #78716c; /* Secondary text */
  --color-gray-600: #57534e;
  --color-gray-700: #44403c; /* Body text */
  --color-gray-800: #292524;
  --color-gray-900: #1c1917; /* Headings */

  /* ===========================================
     COLORS - Surfaces (Light Mode)
     =========================================== */
  --color-background: #fafaf9;
  --color-background-alt: #f5f5f4;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-surface-overlay: rgba(255, 255, 255, 0.95);

  /* ===========================================
     COLORS - Feature Specific
     =========================================== */
  /* Weight */
  --color-weight-gain: #ef4444;
  --color-weight-loss: #10b981;
  --color-weight-neutral: #78716c;

  /* Heart Rate */
  --color-heart: #f43f5e;
  --color-heart-light: #ffe4e6;

  /* Sleep */
  --color-sleep: #6366f1;
  --color-sleep-light: #e0e7ff;

  /* Steps */
  --color-steps: #22c55e;
  --color-steps-light: #dcfce7;

  /* Calories */
  --color-calories: #f97316;
  --color-calories-light: #ffedd5;

  /* Water */
  --color-water: #0ea5e9;
  --color-water-light: #e0f2fe;

  /* Blood Pressure */
  --color-blood-pressure: #8b5cf6;
  --color-blood-pressure-light: #ede9fe;

  /* ===========================================
     TYPOGRAPHY - Font Families
     =========================================== */
  --font-heading:
    "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-body:
    "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;

  /* ===========================================
     TYPOGRAPHY - Font Sizes
     =========================================== */
  --text-xs: 0.75rem; /* 12px */
  --text-sm: 0.875rem; /* 14px */
  --text-base: 1rem; /* 16px */
  --text-lg: 1.125rem; /* 18px */
  --text-xl: 1.25rem; /* 20px */
  --text-2xl: 1.5rem; /* 24px */
  --text-3xl: 1.875rem; /* 30px */
  --text-4xl: 2.25rem; /* 36px */
  --text-5xl: 3rem; /* 48px */
  --text-6xl: 3.75rem; /* 60px */

  /* ===========================================
     TYPOGRAPHY - Font Weights
     =========================================== */
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* ===========================================
     TYPOGRAPHY - Line Heights
     =========================================== */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* ===========================================
     TYPOGRAPHY - Letter Spacing
     =========================================== */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* ===========================================
     SPACING
     =========================================== */
  --space-0: 0;
  --space-px: 1px;
  --space-0-5: 0.125rem; /* 2px */
  --space-1: 0.25rem; /* 4px */
  --space-1-5: 0.375rem; /* 6px */
  --space-2: 0.5rem; /* 8px */
  --space-2-5: 0.625rem; /* 10px */
  --space-3: 0.75rem; /* 12px */
  --space-3-5: 0.875rem; /* 14px */
  --space-4: 1rem; /* 16px */
  --space-5: 1.25rem; /* 20px */
  --space-6: 1.5rem; /* 24px */
  --space-7: 1.75rem; /* 28px */
  --space-8: 2rem; /* 32px */
  --space-9: 2.25rem; /* 36px */
  --space-10: 2.5rem; /* 40px */
  --space-11: 2.75rem; /* 44px */
  --space-12: 3rem; /* 48px */
  --space-14: 3.5rem; /* 56px */
  --space-16: 4rem; /* 64px */
  --space-20: 5rem; /* 80px */
  --space-24: 6rem; /* 96px */

  /* ===========================================
     BORDER RADIUS
     =========================================== */
  --radius-none: 0;
  --radius-sm: 0.25rem; /* 4px */
  --radius-default: 0.375rem; /* 6px */
  --radius-md: 0.5rem; /* 8px */
  --radius-lg: 0.75rem; /* 12px */
  --radius-xl: 1rem; /* 16px */
  --radius-2xl: 1.25rem; /* 20px */
  --radius-3xl: 1.5rem; /* 24px */
  --radius-full: 9999px;

  /* ===========================================
     SHADOWS (Soft, non aggressive)
     =========================================== */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.03);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.05), 0 1px 2px -1px rgb(0 0 0 / 0.05);
  --shadow-md:
    0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg:
    0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --shadow-xl:
    0 20px 25px -5px rgb(0 0 0 / 0.05), 0 8px 10px -6px rgb(0 0 0 / 0.05);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.15);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.03);
  --shadow-none: 0 0 #0000;

  /* Colored shadows for interactive elements */
  --shadow-primary: 0 4px 14px -2px rgb(20 184 166 / 0.25);
  --shadow-primary-lg: 0 10px 25px -3px rgb(20 184 166 / 0.3);
  --shadow-secondary: 0 4px 14px -2px rgb(244 63 94 / 0.25);
  --shadow-accent: 0 4px 14px -2px rgb(245 158 11 / 0.25);

  /* ===========================================
     TRANSITIONS
     =========================================== */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Specific transitions */
  --transition-colors:
    color, background-color, border-color, fill, stroke var(--transition-fast);
  --transition-opacity: opacity var(--transition-fast);
  --transition-shadow: box-shadow var(--transition-fast);
  --transition-transform: transform var(--transition-normal);
  --transition-all: all var(--transition-normal);

  /* ===========================================
     Z-INDEX
     =========================================== */
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-toast: 800;

  /* ===========================================
     COMPONENT-SPECIFIC TOKENS
     =========================================== */
  /* Cards */
  --card-padding: var(--space-6);
  --card-radius: var(--radius-2xl);
  --card-shadow: var(--shadow-md);
  --card-border: 1px solid var(--color-gray-200);

  /* Buttons */
  --btn-padding-x: var(--space-5);
  --btn-padding-y: var(--space-3);
  --btn-radius: var(--radius-xl);
  --btn-font-weight: var(--font-semibold);

  /* Inputs */
  --input-padding-x: var(--space-4);
  --input-padding-y: var(--space-3);
  --input-radius: var(--radius-lg);
  --input-border: 2px solid var(--color-gray-200);
  --input-focus-ring: 0 0 0 3px rgb(20 184 166 / 0.15);

  /* Navigation */
  --nav-height: 64px;
  --nav-height-mobile: 56px;

  /* ===========================================
     BRAND GRADIENT & LEGACY ALIASES
     Migrazione dal viola AI-default al teal del design system.
     I nomi "legacy-purple" sono preservati come alias per i file che
     non sono ancora stati riscritti; i valori puntano ora alla palette teal.
     =========================================== */
  --color-brand-start: var(--color-primary-500);
  --color-brand-end: var(--color-primary-700);
  --color-brand-gradient: linear-gradient(
    135deg,
    var(--color-brand-start),
    var(--color-brand-end)
  );
  --color-brand-gradient-90: linear-gradient(
    90deg,
    var(--color-brand-start),
    var(--color-brand-end),
    var(--color-brand-start)
  );

  /* Alias legacy - da rimuovere quando i raw hex saranno migrati */
  --color-legacy-purple-light: var(--color-brand-start);
  --color-legacy-purple-dark: var(--color-brand-end);
  --color-legacy-gradient: var(--color-brand-gradient);
  --color-legacy-gradient-90: var(--color-brand-gradient-90);

  /* Note/disclaimer utility icon - usata da .note--warning/::before */
  --note-warning-bg: var(--color-warning-light);
  --note-warning-fg: var(--color-warning-dark);
  --note-warning-border: var(--color-accent-300);
  --note-info-bg: var(--color-info-light);
  --note-info-fg: var(--color-info-dark);
  --note-info-border: var(--color-info);
}

/* ===========================================
   BASE STYLES
   =========================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-gray-700);
  background-color: var(--color-background);
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-gray-900);
  margin: 0;
}

h1 {
  font-size: var(--text-4xl);
  letter-spacing: var(--tracking-tight);
}
h2 {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-tight);
}
h3 {
  font-size: var(--text-2xl);
}
h4 {
  font-size: var(--text-xl);
}
h5 {
  font-size: var(--text-lg);
}
h6 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
}

p {
  margin: 0;
  color: var(--color-gray-600);
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-700);
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-primary-100);
  color: var(--color-primary-900);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-300);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

/* Code */
code,
pre {
  font-family: var(--font-mono);
}