/* ========================================
   Design System - CSS Variables
   ======================================== */

:root {
    /* ==================== Colors ==================== */
    
    /* Primary Colors */
    --color-primary: #0299B0;
    --color-primary-light: #F4FBFB;
    
    /* Text Colors */
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-text-basic: #1E2124;
    
    /* Gray Scale */
    --color-gray-medium: #808080;
    --color-gray-light: #E0E0E0;
    --color-icon-disabled: #6D7882;
    
    /* Background Colors */
    --color-background-white: #FFFFFF;
    --color-background-gray-section: #FFFFFF;
    --color-background-gray-light: #E0E0E0;
    --color-background-gray-disabled: #F2F4F6;
    --color-background-mint-light: #F4FBFB;
    
    /* Status Colors */
    --color-positive: #04AF8A;
    --color-available: #04AF8A;
    --color-negative: #E57373;
    --color-error: #E1383E;
    --color-comment: #E8178A;
    
    /* Border Colors */
    --color-border-gray: #B1B8BE;
    
    /* ==================== Typography ==================== */
    
    /* Font Family */
    --font-family-primary: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-mono: 'Roboto Mono', monospace;
    
    /* Font Sizes */
    --font-size-10: 10px;
    --font-size-11: 11px;
    --font-size-12: 12px;
    --font-size-13: 13px;
    --font-size-14: 14px;
    --font-size-15: 15px;
    --font-size-16: 16px;
    --font-size-17: 17px;
    --font-size-18: 18px;
    --font-size-24: 24px;
    --font-size-30: 30px;
    --font-size-32: 32px;
    
    /* Font Weights */
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-sm: 16.50px;
    --line-height-md: 19.50px;
    --line-height-lg: 21px;
    --line-height-xl: 24px;
    --line-height-2xl: 27px;
    
    /* ==================== Spacing ==================== */
    --spacing-4: 4px;
    --spacing-6: 6px;
    --spacing-7: 7px;
    --spacing-8: 8px;
    --spacing-12: 12px;
    --spacing-16: 16px;
    --spacing-20: 20px;
    --spacing-24: 24px;
    --spacing-40: 40px;
    --spacing-44: 44px;
    
    /* ==================== Border Radius ==================== */
    --radius-4: 4px;
    --radius-6: 6px;
    --radius-8: 8px;
    --radius-12: 12px;
    --radius-round: 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: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* ==================== Z-Index ==================== */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ==================== Base Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-primary);
    color: var(--color-black);
    background-color: var(--color-background-white);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== Utility Classes ==================== */
.container {
    width: 100%;
    max-width: 390px;
    margin: 0 auto;
    padding: 0 var(--spacing-20);
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

/* Display */
.d-flex {
    display: flex;
}

.d-inline-flex {
    display: inline-flex;
}

.d-none {
    display: none;
}

/* Flex Direction */
.flex-column {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

/* Justify Content */
.justify-start {
    justify-content: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

.justify-between {
    justify-content: space-between;
}

/* Align Items */
.align-start {
    align-items: flex-start;
}

.align-center {
    align-items: center;
}

.align-end {
    align-items: flex-end;
}

/* Gaps */
.gap-4 {
    gap: var(--spacing-4);
}

.gap-8 {
    gap: var(--spacing-8);
}

.gap-12 {
    gap: var(--spacing-12);
}

.gap-16 {
    gap: var(--spacing-16);
}

.gap-20 {
    gap: var(--spacing-20);
}