/* New one-line header navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 15px 25px;
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
}

.header-title {
    color: #333;
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    white-space: nowrap;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 1;
    max-width: 600px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
}

/* Compact search and controls */
.search-box {
    flex: 1;
    min-width: 200px;
    padding: 10px 15px;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.search-box:focus {
    outline: none;
    box-shadow: 0 2px 15px rgba(102, 126, 234, 0.3);
    transform: translateY(-1px);
}

.category-filter {
    padding: 10px 30px 10px 15px;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    min-width: 150px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 14px;
}

.category-filter:focus {
    outline: none;
    box-shadow: 0 2px 15px rgba(102, 126, 234, 0.3);
    transform: translateY(-1px);
}

.add-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    cursor: pointer;
    font-weight: bold;
    padding: 10px 20px;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.add-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

/* Authentication section */
.auth-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.profile-pic {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #667eea;
    cursor: pointer;
    transition: all 0.3s ease;
}

.profile-pic:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.auth-buttons {
    display: flex;
    gap: 10px;
}

.login-btn, .signup-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 15px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.login-btn {
    background: transparent;
    color: #667eea;
    border: 1px solid #667eea;
}

.login-btn:hover {
    background: #667eea;
    color: white;
}

.signup-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
}

.signup-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}