/**
 * Robinhood Theme - Global Styles Reset & Base Styles
 * Phase 1: Foundation & Design System
 */

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

/* ===== Body & Typography ===== */
body {
    font-family: var(--robinhood-font-family);
    background-color: var(--robinhood-bg-secondary);
    color: var(--robinhood-text-primary);
    line-height: var(--robinhood-line-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 64px; /* Header height - updated for Robinhood header */
}

/* ===== Typography Scale ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--robinhood-font-family);
    font-weight: var(--robinhood-weight-semibold);
    color: var(--robinhood-text-primary);
    line-height: var(--robinhood-line-tight);
    margin: 0;
}

h1 {
    font-size: var(--robinhood-font-heading-xl);
    font-weight: var(--robinhood-weight-bold);
}

h2 {
    font-size: var(--robinhood-font-heading-lg);
}

h3 {
    font-size: var(--robinhood-font-heading-md);
}

h4 {
    font-size: var(--robinhood-font-heading-sm);
}

p {
    font-size: var(--robinhood-font-body);
    color: var(--robinhood-text-primary);
    line-height: var(--robinhood-line-relaxed);
    margin: 0;
}

/* ===== Links ===== */
a {
    color: var(--robinhood-success);
    text-decoration: none;
    transition: color var(--robinhood-transition-base);
}

a:hover {
    color: var(--robinhood-success-hover);
}

/* ===== Container & Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--robinhood-space-6) var(--robinhood-space-4);
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--robinhood-space-6) var(--robinhood-space-4);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--robinhood-space-6) var(--robinhood-space-4);
}

/* ===== Header (Phase 2에서 더 개선 예정) ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--robinhood-bg-primary);
    color: var(--robinhood-text-primary);
    padding: var(--robinhood-space-4) 0;
    box-shadow: var(--robinhood-shadow-sm);
    border-bottom: 1px solid var(--robinhood-border-light);
    z-index: var(--robinhood-z-fixed);
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--robinhood-space-5);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ===== Forms (기본 스타일 제거, 컴포넌트 사용 권장) ===== */
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
input[type="date"],
textarea,
select {
    font-family: var(--robinhood-font-family);
}

/* ===== Tables (Phase 3에서 Card-based로 전환 예정) ===== */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--robinhood-font-body-sm);
}

th, td {
    padding: var(--robinhood-space-3) var(--robinhood-space-4);
    text-align: left;
    border-bottom: 1px solid var(--robinhood-border-light);
}

th {
    font-weight: var(--robinhood-weight-semibold);
    color: var(--robinhood-text-secondary);
    background: var(--robinhood-bg-secondary);
}

/* ===== Utility Classes ===== */
.robinhood-spacing-section {
    margin-bottom: var(--robinhood-space-8);
}

.robinhood-spacing-compact {
    margin-bottom: var(--robinhood-space-4);
}

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

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

.robinhood-flex {
    display: flex;
}

.robinhood-flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.robinhood-flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.robinhood-flex-column {
    display: flex;
    flex-direction: column;
}

.robinhood-gap-2 {
    gap: var(--robinhood-space-2);
}

.robinhood-gap-4 {
    gap: var(--robinhood-space-4);
}

.robinhood-gap-6 {
    gap: var(--robinhood-space-6);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    body {
        padding-top: 64px;
    }
    
    .container {
        padding: var(--robinhood-space-4) var(--robinhood-space-3);
    }
    
    h1 {
        font-size: var(--robinhood-font-heading-lg);
    }
    
    h2 {
        font-size: var(--robinhood-font-heading-md);
    }
}