/* Base Styles - Minimalist Monochrome Theme */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: #fafafa;
    color: #18181b;
    line-height: 1.6;
}

/* Header */
.header {
    background: #18181b;
    color: #fafafa;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 24px;
}

.username {
    font-size: 14px;
    color: #fafafa;
    font-weight: 500;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s ease;
}

.btn-logout {
    background: #3f3f46;
    color: #fafafa;
}

.btn-logout:hover {
    background: #52525b;
    transform: translateY(-1px);
}

/* Messages */
.messages-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 32px;
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: 100%;
    pointer-events: none;
}

.message {
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: 500;
    pointer-events: auto;
}

.message-success {
    background: #22c55e;
    color: white;
}

.message-error {
    background: #dc2626;
    color: white;
}

/* Main Content */
.main-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 32px;
    height: calc(100vh - 64px);
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}