* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: #2c3e50;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.logo {
    color: #fff;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.nav-links a {
    color: #ecf0f1;
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3498db;
}

#username {
    color: #3498db;
    margin-right: 10px;
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Auth Forms */
.auth-form {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.auth-form h2 {
    margin-bottom: 1.5rem;
    text-align: center;
    color: #2c3e50;
}

.auth-form input {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.auth-form button {
    width: 100%;
    padding: 12px;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.auth-form button:hover {
    background: #2980b9;
}

.error {
    color: #e74c3c;
    text-align: center;
    margin-top: 1rem;
}

/* Welcome Section */
#welcomeSection {
    text-align: center;
    padding: 4rem 0;
}

#welcomeSection h1 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

#welcomeSection a {
    color: #3498db;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    color: #2c3e50;
}

.section-header button {
    padding: 10px 20px;
    background: #27ae60;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.section-header button:hover {
    background: #219a52;
}

/* Add Forms */
.add-form {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.add-form input,
.add-form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.add-form button {
    padding: 10px 20px;
    margin-right: 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

.add-form button:first-of-type {
    background: #3498db;
    color: #fff;
}

.add-form button.cancel {
    background: #95a5a6;
    color: #fff;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 1rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.select-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
}

.select-label select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    background: #fff;
}

/* Search Bar */
.search-bar {
    margin-bottom: 1.5rem;
}

.search-bar input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

/* Items List */
.items-list {
    display: grid;
    gap: 1rem;
}

.item {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.item.private {
    border-left: 4px solid #95a5a6;
}

.private-badge {
    background: #95a5a6;
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-right: 5px;
}

.interval-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-right: 5px;
    color: #fff;
}

.interval-daily { background: #e74c3c; }
.interval-weekly { background: #3498db; }
.interval-monthly { background: #9b59b6; }
.interval-once { background: #27ae60; }
.interval-never { background: #95a5a6; }

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.item-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    text-decoration: none;
}

a.item-title:hover {
    color: #3498db;
}

.item-actions button {
    padding: 5px 10px;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    margin-left: 5px;
}

.item-actions button.delete {
    background: #e74c3c;
}

.item-actions button:hover {
    opacity: 0.9;
}

.item-url {
    color: #7f8c8d;
    font-size: 0.9rem;
    word-break: break-all;
}

.item-desc,
.item-content {
    margin-top: 0.5rem;
    color: #555;
}

.item-tags {
    margin-top: 0.5rem;
    color: #3498db;
    font-size: 0.9rem;
}

.empty {
    text-align: center;
    color: #7f8c8d;
    padding: 2rem;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 1rem 0;
    text-align: center;
    margin-top: auto;
}