/* 최우선 body 스타일 (맨 앞에 추가) */
html, body {
    margin: 0 !important;
    padding: 0 !important;
    font-family: 'Spoqa Han Sans Neo', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
    background: #FAFAFA !important;
    min-height: 100vh;
    box-sizing: border-box;
}

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

/* ========================================
   아이노트 디자인 시스템 v1.0
   Created: 2026-03-14
   Style: 네이버메모 참조, 전문적이고 심플한 디자인
   ======================================== */

/* ========================================
   CSS 변수 (Design Tokens)
   ======================================== */
:root {
    /* ===== Primary Colors - 목업 브라이트 블루 ===== */
    --color-primary: #2D7FED;
    --color-primary-hover: #1E6CD9;
    --color-primary-light: #DBEAFE;
    --color-primary-dark: #1E54B7;
    
    /* ===== Secondary Colors ===== */
    --color-secondary: #3B82F6;
    --color-secondary-light: #93C5FD;
    
    /* ===== Accent Colors ===== */
    --color-voice: #8B5CF6;           /* 음성메모 보라색 */
    --color-voice-light: #EDE9FE;
    --color-favorite: #F59E0B;        /* 즐겨찾기 황금색 */
    --color-favorite-light: #FEF3C7;
    --color-ai: #EC4899;              /* AI 핑크색 */
    --color-ai-light: #FCE7F3;
    
    /* ===== Neutral Colors ===== */
    --color-gray-50: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #E5E5E5;
    --color-gray-300: #D4D4D4;
    --color-gray-400: #A3A3A3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    
    /* ===== Semantic Colors ===== */
    --color-success: #4CAF50;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #2D7FED;
    
    /* ===== 목업 추가 색상 ===== */
    --color-text-title: #757575;
    --color-text-body: #424242;
    --color-text-placeholder: #9E9E9E;
    --color-border: #E0E0E0;
    --color-inactive-bg: #F5F5F5;
    
    /* ===== Background Colors ===== */
    --bg-primary: #FFFFFF;
    --bg-secondary: #FAFAFA;
    --bg-tertiary: #F5F5F5;
    --bg-hover: #F5F5F5;
    --bg-active: #E5E5E5;
    
    /* ===== Border Colors ===== */
    --border-color: #E5E5E5;
    --border-color-dark: #D4D4D4;
    --border-color-light: #F5F5F5;
    
    /* ===== Typography ===== */
    --font-family: 'Spoqa Han Sans Neo', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 15px;
    --font-size-md: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 28px;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* ===== Spacing ===== */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    
    /* ===== Border Radius ===== */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* ===== Shadows ===== */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.10);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-fab: 0 4px 12px rgba(30, 58, 138, 0.3);
    
    /* ===== Z-Index ===== */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* ===== Transitions ===== */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* ===== Breakpoints (for reference) ===== */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-gray-800);
    background: var(--bg-secondary);
    min-height: 100vh;
}

/* ========================================
   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(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-md); }

p {
    margin-bottom: var(--space-4);
}

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

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

/* ========================================
   Buttons
   ======================================== */

/* Primary Button */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family);
    color: white;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Secondary Button */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family);
    color: var(--color-primary);
    background: var(--bg-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: var(--color-primary-light);
}

.btn-secondary:active {
    background: var(--color-primary-light);
    transform: scale(0.98);
}

/* Ghost Button */
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-gray-700);
    background: transparent;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-ghost:hover {
    background: var(--bg-hover);
    color: var(--color-gray-900);
}

/* Icon Button */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-gray-600);
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--color-gray-900);
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
}

.btn-icon-lg {
    width: 48px;
    height: 48px;
}

/* ========================================
   Input Fields
   ======================================== */
.input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-gray-900);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.input:disabled {
    background: var(--bg-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
}

.input::placeholder {
    color: var(--color-gray-400);
}

/* Input with icon */
.input-group {
    position: relative;
    width: 100%;
}

.input-group .input {
    padding-left: var(--space-10);
}

.input-group-icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-500);
    pointer-events: none;
}

/* Textarea */
textarea.input {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   Cards
   ======================================== */
.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.card-flat {
    box-shadow: none;
    border: 1px solid var(--border-color);
}

.card-flat:hover {
    box-shadow: var(--shadow-sm);
}

/* ========================================
   Badges
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 4px 8px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius);
    white-space: nowrap;
}

.badge-primary {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.badge-voice {
    background: var(--color-voice-light);
    color: var(--color-voice);
}

.badge-favorite {
    background: var(--color-favorite-light);
    color: var(--color-favorite);
}

.badge-ai {
    background: var(--color-ai-light);
    color: var(--color-ai);
}

.badge-success {
    background: #D1FAE5;
    color: var(--color-success);
}

.badge-warning {
    background: var(--color-favorite-light);
    color: var(--color-warning);
}

.badge-error {
    background: #FEE2E2;
    color: var(--color-error);
}

/* ========================================
   Utilities
   ======================================== */

/* Display */
.hidden { display: none !important; }
.block { display: block !important; }
.inline-block { display: inline-block !important; }
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }
.grid { display: grid !important; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* Text */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.font-bold { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-medium { font-weight: var(--font-weight-medium); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }

/* Colors */
.text-primary { color: var(--color-primary); }
.text-gray-500 { color: var(--color-gray-500); }
.text-gray-600 { color: var(--color-gray-600); }
.text-gray-700 { color: var(--color-gray-700); }
.text-gray-800 { color: var(--color-gray-800); }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* Transitions */
.transition { transition: all var(--transition-base); }
.transition-fast { transition: all var(--transition-fast); }

/* Responsive visibility */
@media (max-width: 768px) {
    .hidden-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .hidden-desktop { display: none !important; }
}