/* ============================================
   BASE STYLES
   Description: CSS reset, custom properties
   (design tokens), typography, and global utility
   classes used throughout the ANNA website.
   ============================================ */

/* ----- CSS Custom Properties (Design Tokens) ----- */
:root {
    /* Brand Colors */
    --color-primary: #E8477E;
    --color-primary-dark: #D13A6D;
    --color-primary-light: #FDF0F4;
    --color-primary-bg: #FFF5F8;

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-black: #1A1A1A;
    --color-gray-900: #212529;
    --color-gray-700: #495057;
    --color-gray-500: #6C757D;
    --color-gray-300: #DEE2E6;
    --color-gray-100: #F8F9FA;

    /* Accent Card Colors (Daily Agenda) */
    --color-card-yellow: #FFF8E7;
    --color-card-pink: #FFF0F5;
    --color-card-green: #F0FAF0;
    --color-card-blue: #F0F4FF;

    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-accent: 'Caveat', 'Dancing Script', cursive;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
}


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

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

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--line-height-normal);
    color: var(--color-gray-900);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}


/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-gray-900);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }

p {
    color: var(--color-gray-700);
    line-height: var(--line-height-relaxed);
}


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


/* ----- Accessibility Utilities ----- */

/* Screen reader only: visually hidden but accessible */
.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;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    z-index: 1000;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}


/* ----- Accent Font (handwritten style) ----- */
.hero__accent,
.mission__accent,
.care__accent {
    font-family: var(--font-accent);
    font-weight: var(--font-weight-normal);
}


/* ----- Section Label (small uppercase tag) ----- */
.mission__label,
.care__label,
.daily-agenda__label {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}


/* ----- Responsive breakpoints ----- */
/* Mobile first. Breakpoints:
   - sm: 640px
   - md: 768px
   - lg: 1024px
   - xl: 1280px
*/

@media (max-width: 768px) {
    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-2xl); }
    h3 { font-size: var(--text-xl); }
}