:root {
    --notion-bg: #ffffff;
    --notion-sidebar: #f7f6f3;
    --notion-text: #37352f;
    --notion-text-light: #73726e;
    --notion-border: rgba(55, 53, 47, 0.09);
    --notion-hover: rgba(55, 53, 47, 0.04);
    --notion-accent: #2383e2;
    --notion-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
}

body {
    margin: 0;
    font-family: var(--notion-font);
    color: var(--notion-text);
    background-color: var(--notion-bg);
}

/* Sidebar */
.sidebar {
    width: 240px;
    background-color: var(--notion-sidebar);
    border-right: 1px solid var(--notion-border);
    display: flex;
    flex-direction: column;
    padding: 12px 0;
    transition: width 0.2s ease;
}

.sidebar-item {
    padding: 6px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--notion-text-light);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px;
    margin: 0 4px;
}

.sidebar-item:hover {
    background-color: var(--notion-hover);
    color: var(--notion-text);
}

.sidebar-item.active {
    background-color: var(--notion-hover);
    color: var(--notion-text);
}

.sidebar-header {
    padding: 12px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--notion-text);
}

/* Main Content */
.main {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    background: white;
}

.header {
    height: 45px;
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--notion-border);
    font-size: 14px;
    color: var(--notion-text-light);
}

.content {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    padding: 40px 60px;
}

/* Notion Components */
h1 {
    font-size: 40px;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.page-icon {
    font-size: 78px;
    margin-bottom: 20px;
    display: block;
}

.block {
    margin-bottom: 2px;
    padding: 4px 0;
    font-size: 16px;
    line-height: 1.5;
}

.callout {
    padding: 16px;
    background-color: var(--notion-sidebar);
    border-radius: 4px;
    display: flex;
    gap: 12px;
    margin: 16px 0;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.notion-card {
    border: 1px solid var(--notion-border);
    border-radius: 4px;
    overflow: hidden;
    transition: background 0.1s ease;
    text-decoration: none;
    color: inherit;
}

.notion-card:hover {
    background: var(--notion-hover);
}

.notion-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-bottom: 1px solid var(--notion-border);
}

.notion-card-content {
    padding: 12px;
}

.notion-card-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
}

.notion-card-desc {
    font-size: 12px;
    color: var(--notion-text-light);
}

/* Buttons */
.notion-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid var(--notion-border);
    background: white;
    color: var(--notion-text);
}

.notion-btn:hover {
    background: var(--notion-hover);
}

.notion-btn.primary {
    background: var(--notion-accent);
    color: white;
    border-color: var(--notion-accent);
}

.notion-btn.primary:hover {
    background: #1e70c1;
}

/* Login Page specific */
.login-container {
    height: 100vh;
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
    background: white;
}

.login-box {
    width: 400px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--notion-text-light);
    margin-bottom: 6px;
    text-transform: uppercase;
}

.form-group input {
    width: 100%;
    padding: 10px;
    box-sizing: border-box;
    border: 1px solid var(--notion-border);
    border-radius: 4px;
    font-size: 14px;
    outline: none;
}

.form-group input:focus {
    border-color: var(--notion-accent);
    box-shadow: 0 0 0 2px rgba(35, 131, 226, 0.2);
}