/* ============================================
   FRIDAY – Design System & Base Styles
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f5f5f5;
    --text-primary: #111111;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border-color: #eaeaea;
    --border-light: #f0f0f0;
    --accent: #f4b47a;
    --accent-light: #fde8d0;
    --accent-dark: #e09a5c;
    --success: #6bc985;
    --success-light: #eaf7ee;
    --warning: #e8915a;
    --warning-light: #fef0e6;
    --danger: #e06c6c;
    --danger-light: #fdeaea;
    --info: #6baee0;
    --info-light: #e6f2fd;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.6875rem;
    /* 11px */
    --font-size-sm: 0.8125rem;
    /* 13px */
    --font-size-base: 0.9375rem;
    /* 15px */
    --font-size-md: 1.0625rem;
    /* 17px */
    --font-size-lg: 1.25rem;
    /* 20px */
    --font-size-xl: 1.625rem;
    /* 26px */
    --font-size-2xl: 2.25rem;
    /* 36px */
    --font-size-3xl: 3rem;
    /* 48px */

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.06), 0 4px 6px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.08), 0 8px 10px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 56px;
    --bottom-nav-height: 60px;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    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-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

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

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

input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
    width: 100%;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

ul,
ol {
    list-style: none;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.3;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Selection */
::selection {
    background: var(--accent-light);
    color: var(--text-primary);
}